Gaya APA

WALKER, S., KATZ, C, M. (2005). Police in America an Introduction / WALKER, Samuel , KATZ, Charles M (Ed.5). America: McGrawe-Hill.

Gaya MLA

WALKER, Samuel., KATZ, Charles, M. "Police in America an Introduction / WALKER, Samuel , KATZ, Charles M". Ed.5 America: McGrawe-Hill, 2005. Text.