Cita APA (7th ed.)

Kleber, B., & Honnef, K. (2011). Photographers. Jovis Verl..

Cita Chicago (17th ed.)

Kleber, Birgit, i Klaus Honnef. Photographers. Berlin: Jovis Verl., 2011.

Cita MLA (8th ed.)

Kleber, Birgit, i Klaus Honnef. Photographers. Jovis Verl., 2011.