Cita APA (7a ed.)

Schwimmer, M., & Middell, E. (1975). Skizzen per Post. Seemann.

Cita Chicago Style (17a ed.)

Schwimmer, Max, y Eike Middell. Skizzen Per Post. Leipzig: Seemann, 1975.

Cita MLA (8a ed.)

Schwimmer, Max, y Eike Middell. Skizzen Per Post. Seemann, 1975.