APA (American Psychological Association) style is commonly used in the social sciences. The APA released a 6th edition of their publication manual in 2010, which contains many updates from the previous edition.
MLA (Modern Language Association) style is commonly used in the liberal arts and humanties (ex. English). The MLA released a 7th edition of their publication manual in 2009, which contains many updates from the previous edition including new recommendations for citing online or born digitial sources.
Another citation resource is in the Mitchell College of Business Handbook which is in the MCOB Business Library, both in the MCOB Reference collection and as a two-hour loan at the MCOB Reserve desk. The call number is PE 1408 .K6746 2007.