APA (7th ed.) Citation

Wasserfall, K. (1991). Jakob, lieber Jakob. Anrich.

Chicago Style (17th ed.) Citation

Wasserfall, Kurt. Jakob, Lieber Jakob. Kevelaer: Anrich, 1991.

MLA (9th ed.) Citation

Wasserfall, Kurt. Jakob, Lieber Jakob. Anrich, 1991.

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