Here are some links to online sources that will help you give references to works that you cite when writing. These links will take you to sites that will help you with the format for giving references, including the MLA & APA standards and electronic sources too.
StudentABC delivers a full range of bibliography tools for APA, MLA & Chicago style citations.
The Landmark Citation Machine
The primary goal of this tool is to make the proper crediting of information property so easy that it becomes a habit, not a laborious task.
CiteSeer is a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science. CiteSeer aims to improve the dissemination and feedback of the scientific literature and to provide improvements in functionality, usability, availability, cost, comprehensiveness, efficiency, and timeliness in the access of scientific and scholarly knowledge. CiteSeer indexes PostScript and PDF research articles on the Web.
A description of how to write a bibliography, including examples and links to forum discussions on the subject.
The Purdue OWL: Modern Language Association (MLA) Style
MLA (Modern Language Association) style is most commonly used to write papers and cite sources within the liberal arts and humanities. This resource offers examples for the general format of MLA research papers, in-text citations, endnotes/footnotes, and the Works Cited page.
The Purdue OWL: American Psychological Association (APA) Style
APA (American Psychological Association) style is most commonly used to cite sources within the social sciences. This resource offers examples for the general format of APA research papers, in-text citations, endnotes/footnotes, and the reference page.
Format APA, MLA, Turabian, Chicago Style, footnotes, bibliographies, table of contents.
Academic English Links
Links to sites on English for academic purposes.
DMOZ category on Writer Resources and Citation