APA aipamena

Walker, S. (2005). The Police in America. New York: Philip A. Butcher.

Chicago Style aipamena

Walker, Samuel. The Police in America. New York: Philip A. Butcher, 2005.

MLA aipamena

Walker, Samuel. The Police in America. New York: Philip A. Butcher, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.