APA (7th ed.) Citation

Böttcher, H. M. (1967). Umsturz des Himmels. Union-Verlag.

Chicago Style (17th ed.) Citation

Böttcher, Helmuth M. Umsturz Des Himmels. Berlin: Union-Verlag, 1967.

MLA (8th ed.) Citation

Böttcher, Helmuth M. Umsturz Des Himmels. Union-Verlag, 1967.

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