APA (7th ed.) Citation

Haeberle, K. E. (1963). Phänomen Nachfrage. Girardet.

Chicago Style (17th ed.) Citation

Haeberle, Karl Erich. Phänomen Nachfrage. Essen: Girardet, 1963.

MLA (9th ed.) Citation

Haeberle, Karl Erich. Phänomen Nachfrage. Girardet, 1963.

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