The American Anthropological Association has adopted the use of Chicago Style for their official publications. They have has incorporated Chicago style into the American Anthropological Association Style Guide.
When writing in the field of Anthropology, this is the recommended citation style.
Chicago Style (Author/ Date)
Please note that your professors may allow you to use other recognized citation styles, such as APA (American Psychological Association), for example. Always check with your professors regarding citation style requirements for your specific assignments.
There are several major citation styles. Which one you should use depends upon the subject area of the class and the preferences of your professor.