APA (7th ed.) Citation

Friedrich, C. D. (1990). Caspar David Friedrich (5., unveränd. Aufl.). Seemann.

Chicago Style (17th ed.) Citation

Friedrich, Caspar David. Caspar David Friedrich. 5., unveränd. Aufl. Leipzig: Seemann, 1990.

MLA (9th ed.) Citation

Friedrich, Caspar David. Caspar David Friedrich. 5., unveränd. Aufl. Seemann, 1990.

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