APA (7th ed.) Citation

Haecker, T. (1959). Was ist der Mensch? Ullstein.

Chicago Style (17th ed.) Citation

Haecker, Theodor. Was Ist Der Mensch? [West-Berlin]: Ullstein, 1959.

MLA (9th ed.) Citation

Haecker, Theodor. Was Ist Der Mensch? Ullstein, 1959.

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