APA (7th ed.) Citation

Breul, K., Lepper, J. H., & Kottenhahn, R. (1939). Cassell's German and English dictionary. Cassell.

Chicago Style (17th ed.) Citation

Breul, Karl, John Heron Lepper, and Rudolf Kottenhahn. Cassell's German and English Dictionary. Lond.: Cassell, 1939.

MLA (8th ed.) Citation

Breul, Karl, et al. Cassell's German and English Dictionary. Cassell, 1939.