APA (7th ed.) Citation

Ettlinger, L. D. (1967). Caspar David Friedrich / by L.D. Ettlinger. Purnell.

Chicago Style (17th ed.) Citation

Ettlinger, L. D. Caspar David Friedrich / by L.D. Ettlinger. Purnell, 1967.

MLA (9th ed.) Citation

Ettlinger, L. D. Caspar David Friedrich / by L.D. Ettlinger. Purnell, 1967.

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