Cita APA (7th ed.)

Frank, R., & Steidl, G. (2006). Come again (First Edition.). Steidl.

Cita Chicago (17th ed.)

Frank, Robert, i Gerhard Steidl. Come Again. First Edition. Göttingen, Germany: Steidl, 2006.

Cita MLA (9th ed.)

Frank, Robert, i Gerhard Steidl. Come Again. First Edition. Steidl, 2006.