APA (7th ed.) Citation

Heyer, G. (1945). Why shoot a butler? Penguin Books.

Chicago Style (17th ed.) Citation

Heyer, Georgette. Why Shoot a Butler? London: Penguin Books, 1945.

MLA (9th ed.) Citation

Heyer, Georgette. Why Shoot a Butler? Penguin Books, 1945.

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