APA (7th ed.) Citation

Hettinger, F. (1863). Apologie des Christenthums. Apologie des Christenthums.

Chicago Style (17th ed.) Citation

Hettinger, Franz. "Apologie Des Christenthums." Apologie Des Christenthums 1863.

MLA (9th ed.) Citation

Hettinger, Franz. "Apologie Des Christenthums." Apologie Des Christenthums, 1863.

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