APA (7th ed.) Citation

Marsh, N. (1949). Enter a murderer. Penguin Books.

Chicago Style (17th ed.) Citation

Marsh, Ngaio. Enter a Murderer. Harmondsworth, Middleesex: Penguin Books, 1949.

MLA (9th ed.) Citation

Marsh, Ngaio. Enter a Murderer. Penguin Books, 1949.

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