Cita APA (7a ed.)

Finckh, G., & Streeruwitz, M. (2007). Olaf Metzel: Noproblem.

Cita Chicago Style (17a ed.)

Finckh, Gerhard, y Marlene Streeruwitz. Olaf Metzel: Noproblem. Wuppertal, 2007.

Cita MLA (8a ed.)

Finckh, Gerhard, y Marlene Streeruwitz. Olaf Metzel: Noproblem. 2007.