These sites will help you cite most common business resources in APA or MLA styles.
Citing Online Business Resources Using APA Style - an extensive guide from Bentley University with additional examples.
Citation Managers - information on Zotero, EndNote Online, and Mendeley.
APA style guide to electronic references [ebook] - provides ~70 examples of various resources cited in APA format.
Purdue OWL - provides information on APA, MLA, and several other citation styles.