APA-referens (7:e uppl.)

Cobb, B. (1956). Critical years at the Yard; the career of Frederick Williamson of the Detective Department and the C.I.D. Faber and Faber.

Chicago-referens (17:e uppl.)

Cobb, Belton. Critical Years at the Yard; the Career of Frederick Williamson of the Detective Department and the C.I.D. London: Faber and Faber, 1956.

MLA-referens (9:e uppl.)

Cobb, Belton. Critical Years at the Yard; the Career of Frederick Williamson of the Detective Department and the C.I.D. Faber and Faber, 1956.