APA (7th ed.) Citation

Romains, J., & Brée, G. (1941). Seven mysteries of Europe. Hutchinson.

Chicago Style (17th ed.) Citation

Romains, Jules, and Germaine Brée. Seven Mysteries of Europe. London: Hutchinson, 1941.

MLA (8th ed.) Citation

Romains, Jules, and Germaine Brée. Seven Mysteries of Europe. Hutchinson, 1941.