Cita APA (7a ed.)

Kettner, K., & Kettner, K. (1999). [Such stuff.] Textband. LIT.

Cita Chicago Style (17a ed.)

Kettner, Katharina, y Katharina Kettner. [Such Stuff.] Textband. Münster: LIT, 1999.

Cita MLA (8a ed.)

Kettner, Katharina, y Katharina Kettner. [Such Stuff.] Textband. LIT, 1999.