Klapdor. (2013). Effectiveness of Online Marketing Campaigns (1.). Springer Fachmedien Wiesbaden.
Cita Chicago (17th ed.)Klapdor. Effectiveness of Online Marketing Campaigns. 1. Springer Fachmedien Wiesbaden, 2013.
Cita MLA (8th ed.)Klapdor. Effectiveness of Online Marketing Campaigns. 1. Springer Fachmedien Wiesbaden, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.