APA Citation

Walther, A., & Friedrich, C. D. (1990). Caspar David Friedrich. Berlin: Henschel-Verl.

Chicago Style Citation

Walther, Angelo, and Caspar David Friedrich. Caspar David Friedrich. Berlin: Henschel-Verl, 1990.

MLA Citation

Walther, Angelo, and Caspar David Friedrich. Caspar David Friedrich. Berlin: Henschel-Verl, 1990.

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