APA (7th ed.) Citation

Häring, B. (1968). Krise um "Humanae vitae". Kaffke.

Chicago Style (17th ed.) Citation

Häring, Bernhard. Krise Um "Humanae Vitae". Bergen-Enkheim: Kaffke, 1968.

MLA (9th ed.) Citation

Häring, Bernhard. Krise Um "Humanae Vitae". Kaffke, 1968.

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