APA (7th ed.) Citation

Werfel, F., & Dunlop, G. (1934). The forty days. Jarrolds.

Chicago Style (17th ed.) Citation

Werfel, Franz, and Geoffrey Dunlop. The Forty Days. London: Jarrolds, 1934.

MLA (8th ed.) Citation

Werfel, Franz, and Geoffrey Dunlop. The Forty Days. Jarrolds, 1934.

Warning: These citations may not always be 100% accurate.