APA (7th ed.) Citation

Attwater, D. (1965). The Penguin dictionary of saints. Penguin Books.

Chicago Style (17th ed.) Citation

Attwater, Donald. The Penguin Dictionary of Saints. Baltimore: Penguin Books, 1965.

MLA (9th ed.) Citation

Attwater, Donald. The Penguin Dictionary of Saints. Penguin Books, 1965.