ZEITHAML (Valarie V.)/ BITNER (Marry Jo), . (2006). Service Marketing. New York: Mcgrawhill International New York.
ZEITHAML (Valarie V.)/ BITNER (Marry Jo), . 2006. Service Marketing. New York: Mcgrawhill International New York.
ZEITHAML (Valarie V.)/ BITNER (Marry Jo), . Service Marketing. New York: Mcgrawhill International New York. 2006.
