Cita APA (7th ed.)

Lupfer, G., & Sigel, P. (2019). Walter Gropius: Propagandist der neuen Form. 1883-1969 (1a. ed.). Taschen.

Cita Chicago (17th ed.)

Lupfer, Gilbert, i Paul Sigel. Walter Gropius: Propagandist Der Neuen Form. 1883-1969. 1a. ed. Colonia: Taschen, 2019.

Cita MLA (9th ed.)

Lupfer, Gilbert, i Paul Sigel. Walter Gropius: Propagandist Der Neuen Form. 1883-1969. 1a. ed. Taschen, 2019.