Παραπομπή APA

Venugopal, V. R. (2004). Services marketing.

Παραπομπή Chicago Style

Venugopal, Vasanti; Raghu. Services Marketing. Himalaya Pub House: Mumbai, 2004.

Παραπομπή MLA

Venugopal, Vasanti; Raghu. Services Marketing. 2004.