Cita APA (7th ed.)

Hüneke, A., & Hüneke, A. (2017). Erich Heckel. Hirmer.

Cita Chicago (17th ed.)

Hüneke, Andreas, i Andreas Hüneke. Erich Heckel. München: Hirmer, 2017.

Cita MLA (8th ed.)

Hüneke, Andreas, i Andreas Hüneke. Erich Heckel. Hirmer, 2017.