Cita APA (7th ed.)

Ahrens, C., & Green, A. (2008). Frank Gerritz: Further down the line. König.

Cita Chicago (17th ed.)

Ahrens, Carsten, i Alison Green. Frank Gerritz: Further Down the Line. Köln: König, 2008.

Cita MLA (8th ed.)

Ahrens, Carsten, i Alison Green. Frank Gerritz: Further Down the Line. König, 2008.