APA-referens (7:e uppl.)

Crowther, A. (1999). Crossing The Line. Headline Book Publishing.

Chicago-referens (17:e uppl.)

Crowther, Anthony. Crossing The Line. London: Headline Book Publishing, 1999.

MLA-referens (8:e uppl.)

Crowther, Anthony. Crossing The Line. Headline Book Publishing, 1999.