APA (7th ed.) Citation

Oppenheimer, F. (1926). System der Soziologie. Fischer.

Chicago Style (17th ed.) Citation

Oppenheimer, Franz. System Der Soziologie. Stuttgart: Fischer, 1926.

MLA (9th ed.) Citation

Oppenheimer, Franz. System Der Soziologie. Fischer, 1926.

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