APA (7th ed.) Citation

Allingham, M. (1978). The white cottage mystery. Penguin Books.

Chicago Style (17th ed.) Citation

Allingham, Margery. The White Cottage Mystery. London u.a: Penguin Books, 1978.

MLA (9th ed.) Citation

Allingham, Margery. The White Cottage Mystery. Penguin Books, 1978.