APA (7th ed.) Citation

Wentworth, P. (1989). Poison in the pen. Chivers Press.

Chicago Style (17th ed.) Citation

Wentworth, Patricia. Poison in the Pen. Bath: Chivers Press, 1989.

MLA (9th ed.) Citation

Wentworth, Patricia. Poison in the Pen. Chivers Press, 1989.