Cita APA (7a ed.)

Stümke, H. F. (1998). Gay and Gray. SVD.

Cita Chicago Style (17a ed.)

Stümke, Hans-Georg; Freytag. Gay and Gray. Köln: SVD, 1998.

Cita MLA (8a ed.)

Stümke, Hans-Georg; Freytag. Gay and Gray. SVD, 1998.