Dyfyniad APA

Zeithaml,Valarie A. (2018). Services Marketing (7th.). Tata McGraw Hill Education.

Dyfyniad Arddull Chicago

Zeithaml,Valarie A. Services Marketing. 7th. Chennai: Tata McGraw Hill Education, 2018.

Dyfyniad MLA

Zeithaml,Valarie A. Services Marketing. 7th. Tata McGraw Hill Education, 2018.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.