APA (7th ed.) Citation

Müller & Engels, H. (1953). Rudolf von Habsburg. Tellus-Verlag.

Chicago Style (17th ed.) Citation

Müller and Heinrich Engels. Rudolf Von Habsburg. Essen: Tellus-Verlag, 1953.

MLA (9th ed.) Citation

Müller and Heinrich Engels. Rudolf Von Habsburg. Tellus-Verlag, 1953.

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