Cita APA (7th ed.)

Zack. (2010). Bike boy: By Zack. [Pseud., d. i.: Oliver Frey]. Gmünder.

Cita Chicago (17th ed.)

Zack. Bike Boy: By Zack. [Pseud., D. I.: Oliver Frey]. Berlin: Gmünder, 2010.

Cita MLA (8th ed.)

Zack. Bike Boy: By Zack. [Pseud., D. I.: Oliver Frey]. Gmünder, 2010.