Cita APA (7th ed.)

Kettner, K., & Kettner, K. (1999). [Such stuff.] CD-ROM. LIT.

Cita Chicago (17th ed.)

Kettner, Katharina, i Katharina Kettner. [Such Stuff.] CD-ROM. Münster: LIT, 1999.

Cita MLA (8th ed.)

Kettner, Katharina, i Katharina Kettner. [Such Stuff.] CD-ROM. LIT, 1999.