MLA

Mourdoukoutas, Panos, and George J Siomkos. The Seven Principles of Wom and Buzz Marketing. Springer Berlin Heidelberg, 2010.

APA

Mourdoukoutas, P., & Siomkos, G. J. (2010). The Seven Principles of WOM and Buzz Marketing. Springer Berlin Heidelberg.

Chicago

Mourdoukoutas, Panos, and George J Siomkos. The Seven Principles of WOM and Buzz Marketing. : Springer Berlin Heidelberg, 2010.