Gaya APA

Kollman, K. (2014). The American Political System (2nd Edition) (Edisi 2). New York: w.w. Norton & Company.

Gaya MLA

Kollman, Ken. "The American Political System (2nd Edition)". Edisi 2 New York: w.w. Norton & Company, 2014. Fisip-Ilmu Pemerintahan.