APA (7th ed.) Citation

Apel, C. (1990). Asmus Jakob Carstens.

Chicago Style (17th ed.) Citation

Apel, Claus. Asmus Jakob Carstens. 1990.

MLA (9th ed.) Citation

Apel, Claus. Asmus Jakob Carstens. 1990.

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