Cita APA (7th ed.)

Heymel, M. (2017). Martin Niemöller: Michael Heymel. Lambert Schneider.

Cita Chicago (17th ed.)

Heymel, Michael. Martin Niemöller: Michael Heymel. Darmstadt: Lambert Schneider, 2017.

Cita MLA (8th ed.)

Heymel, Michael. Martin Niemöller: Michael Heymel. Lambert Schneider, 2017.