Cita APA (7th ed.)

Freytag, J. (2008). Freie Hand in der Businessclass: Julian Freytag. Gmünder.

Cita Chicago (17th ed.)

Freytag, Julian. Freie Hand in Der Businessclass: Julian Freytag. Berlin: Gmünder, 2008.

Cita MLA (8th ed.)

Freytag, Julian. Freie Hand in Der Businessclass: Julian Freytag. Gmünder, 2008.