APA (7e ed.) Bronvermelding

Whalen. The NYPD's First Fifty Years. University of Nebraska Press.

Chicago (17e ed.) Bronvermelding

Whalen. The NYPD's First Fifty Years. University of Nebraska Press.

MLA (8e ed.) Bronvermelding

Whalen. The NYPD's First Fifty Years. University of Nebraska Press.

Let op: Deze citaties zijn niet altijd 100% accuraat.