APA (7th ed.) Citation

Zmarzlik, H. (1968). Gerhard Ritter (1888-1967).

Chicago Style (17th ed.) Citation

Zmarzlik, Hans-Günter. Gerhard Ritter (1888-1967). 1968.

MLA (9th ed.) Citation

Zmarzlik, Hans-Günter. Gerhard Ritter (1888-1967). 1968.

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