Websites are cited according to the style guide required by the project. MLA and APA formats both require the author name and the date of publication. MLA style requires the date of access be cited, while APA style does not. APA style requires the web address of the site for nondatabase sources, while MLA style does not. Chicago style requires both a web address and the date of access.
MLA style is an academic style often used in educational settings and for research in the humanities, while APA style is used in social sciences and professional journalism. Chicago style is commonly used in non-journalistic professional writing, such as fiction publishing. Professional disciplines such as law, engineering, medicine and business have their own specific style guides.
Because style guides are updated regularly and web citation is a newly developing part of the writing profession, consulting the latest version of the required style guide is vital. For projects that do not have a declared style guide, the style guide used may be chosen based on the discipline: MLA for liberal arts and humanities, APA for news or non-fiction, and Chicago style for general writing or when style that should be used is unclear.