APA (7th ed.) Citation

Müller, G., & Müller, G. B. (1989). April 1933 - September 1933.

Chicago Style (17th ed.) Citation

Müller, Gerd, and Gerd BeteiligteR Müller. April 1933 - September 1933. 1989.

MLA (8th ed.) Citation

Müller, Gerd, and Gerd BeteiligteR Müller. April 1933 - September 1933. 1989.

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