Gaya APA
Klapdor, S. (2013).
Effectiveness of Online Marketing Campaigns .
Springer Fachmedien Wiesbaden:
Springer Gabler.
Gaya MLA
Klapdor, Sebastian.
"Effectiveness of Online Marketing Campaigns".
Springer Fachmedien Wiesbaden:
Springer Gabler,
2013.
E-Book.