I'm wondering what the different ways to cite references are. I have read about different styles of citation, like
APA (American Psychological Association) is used by Education, Psychology, and Sciences
MLA (Modern Language Association) style is used by the Humanities
Chicago/Turabian style is generally used by Business, History, and the Fine Arts
However, these seem to be limited to their respective fields. What are some of the standard styles used in mathematical literature and papers today? Is there a universal standard?