Cita APA (7th ed.)

Gerabek, W. E. (2007). O - Z. de Gruyter.

Cita Chicago (17th ed.)

Gerabek, Werner E. O - Z. Berlin [u.a.]: de Gruyter, 2007.

Cita MLA (8th ed.)

Gerabek, Werner E. O - Z. de Gruyter, 2007.