APA (7th ed.) Citation

Armour, J. (1973). A killer's category. Hale.

Chicago Style (17th ed.) Citation

Armour, John. A Killer's Category. London: Hale, 1973.

MLA (8th ed.) Citation

Armour, John. A Killer's Category. Hale, 1973.

Warning: These citations may not always be 100% accurate.