These software tools are just some of those that are available online.
MLA (Modern Language Association) style is used for humanities publications and nearly all literature publications.
Official style of the American Psychological Association. Most common style used in psychology, anthropology, business, economics, education, political science, and other social sciences.
Chicago/Turabian (The Chicago Manual of Style) is used for some social science publications and for most history publications. Ask your professor if it is appropriate for your research.
Note: Chicago Style has two forms: author-date and notes-and-bibliography.