Cita APA (7th ed.)

Geismeier, W. (1988). Caspar David Friedrich. Seemann.

Cita Chicago (17th ed.)

Geismeier, Willi. Caspar David Friedrich. Leipzig: Seemann, 1988.

Cita MLA (8th ed.)

Geismeier, Willi. Caspar David Friedrich. Seemann, 1988.