APA (7th ed.) Citation

Yourcenar, M., & Frick, G. (1955). Memoirs of Hadrian. Secker & Warburg.

Chicago Style (17th ed.) Citation

Yourcenar, Marguerite, and Grace Frick. Memoirs of Hadrian. London: Secker & Warburg, 1955.

MLA (8th ed.) Citation

Yourcenar, Marguerite, and Grace Frick. Memoirs of Hadrian. Secker & Warburg, 1955.