Dyfyniad APA

Wirtz, J., & Lovelock Christopher Chatterjee Jayanta Das Gopal. (2019). Essentials of Services Marketing (3rd.). Pearson.

Dyfyniad Arddull Chicago

Wirtz, Jochen, and Lovelock Christopher Chatterjee Jayanta Das Gopal. Essentials of Services Marketing. 3rd. Noida: Pearson, 2019.

Dyfyniad MLA

Wirtz, Jochen, and Lovelock Christopher Chatterjee Jayanta Das Gopal. Essentials of Services Marketing. 3rd. Pearson, 2019.

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