APA (7e ed.) Bronvermelding

Helmer. Al Capone and His American Boys. Indiana University Press.

Chicago (17e ed.) Bronvermelding

Helmer. Al Capone and His American Boys. Indiana University Press.

MLA (9e ed.) Bronvermelding

Helmer. Al Capone and His American Boys. Indiana University Press.

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