APA (7th ed.) Citation

Malcolm Lowry, Margerie Bonner Lowry, & Douglas Day. (1972). Dark as the grave wherein my friend is laid. Penguin Books.

Chicago Style (17th ed.) Citation

Malcolm Lowry, Margerie Bonner Lowry, and Douglas Day. Dark as the Grave Wherein My Friend Is Laid. Harmondsworth [England]: Penguin Books, 1972.

MLA (9th ed.) Citation

Malcolm Lowry, et al. Dark as the Grave Wherein My Friend Is Laid. Penguin Books, 1972.