The Department of Political Science recommends American Political Science Association documentation
Meriam Library at the University of California, Chico has a pdf online that has helpful examples of in APSA for
mat.
Style Manual for Political Science - Ref Desk JA 86 .A52 2001. 
This manual is based on the Chicago Manual of Style (Ref Desk Z 253 .U69 1993)
For more information about citation styles see the citation guide
