(1997). Projektbericht Marketing.
Cita Chicago (17th ed.)Projektbericht Marketing. Wiesbaden, 1997.
Cita MLA (8th ed.)Projektbericht Marketing. 1997.
Atenció: Aquestes cites poden no estar 100% correctes.
(1997). Projektbericht Marketing.
Cita Chicago (17th ed.)Projektbericht Marketing. Wiesbaden, 1997.
Cita MLA (8th ed.)Projektbericht Marketing. 1997.