Google Scholar: Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. Google Scholar helps you find relevant work across the world of scholarly research. browse
Web Of Science: Your ideal single research destination to explore the citation universe across subjects and around the world. Web of Science provides you access to the most reliable, integrated, multidisciplinary research connected through linked content citation metrics from multiple sources within a single interface. And since Web of Science adheres to a strict evaluation process, you can be assured only the most influential, relevant, and credible information is included - allowing you to uncover your next big idea faster. browse
Scopus: Scopus is the largest abstract and citation database of peer-reviewed literature: scientific journals, books and conference proceedings. Delivering a comprehensive overview of the world's research output in the fields of science, technology, medicine, social sciences, and arts and humanities, Scopus features smart tools to track, analyze and visualize research. browse
BibMe: It makes it easy to create citations, builds bibliographies and acknowledges other people's work online and generating MLA, APA, Chicago/Turabian citation styles and is available free and is web-based. BibMe makes it easy to create citations, builds bibliographies and acknowledges other people's work online and generating MLA, APA, Chicago/Turabian citation styles and is available free and is web-based. browse
EasyBib: It creates a bibliography quickly using the autocite or manual entry forms for source types. Automatically search and cite any of the designated sources and bibliography formatting for MLA (free), APA and Chicago/Turabian citation styles. browse
OttoBib: OttoBib is a website with a free tool to generate an alphabetized bibliography of books from a list of International Standard Book Numbers (ISBN) with output in MLA, APA, Chicago/ Turabian, BibTeX. browse
Mendeley: Mendeley is a desktop and web program produced by Elsevier for managing and sharing research papers, discovering research data and collaborating online. browse
Zotero [zoh-TAIR-oh]: is a free, easy-to-use tool to help you collect, organize, cite, and share your research sources. browse
ZoteroBib: ZoteroBib is a free service that helps you build a bibliography instantly from any computer or device, without creating an account or installing any software. browse
EndNote: is a commercial reference management software package, used to manage bibliographies and references when writing essays and articles. browse
RefWorks: is a commercial reference management software package, used to manage bibliographies and references when writing essays and articles. browse
Crossref: makes research outputs easy to find, cite, link, assess, and reuse. A not-for-profit organization that exists to make scholarly communications better. browse
CiteULike: is a free service for managing and discovering scholarly references browse
NoodleTools: It is an integrated tools for note-taking, outlining, citation, document archiving/annotation, and collaborative research and writing. browse
KnightCite: KnightCite is a free site that automatically produce MLA, APA, or Chicago style citations for 28 types of sources. It is provided by Hekman Library at Calvin College. browse
Qiqqa: Qiqqa is award-winning free research management software, designed for commercial and academic researchers. browse