APA (7th ed.) Citation

Friedrichs, K. (1927). Vertragsrecht. Haber.

Chicago Style (17th ed.) Citation

Friedrichs, Karl. Vertragsrecht. Berlin: Haber, 1927.

MLA (9th ed.) Citation

Friedrichs, Karl. Vertragsrecht. Haber, 1927.

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