APA

Zeithaml Valarie A, . (2018). Services Marketing : Integrating customer focus across the firm. Chennai: Mc Graw Hill.

Chicago

Zeithaml Valarie A, . 2018. Services Marketing : Integrating customer focus across the firm. Chennai: Mc Graw Hill.

Harvard

Zeithaml Valarie A, . (2018). Services Marketing : Integrating customer focus across the firm. Chennai: Mc Graw Hill.

MLA

Zeithaml Valarie A, . Services Marketing : Integrating customer focus across the firm. Chennai: Mc Graw Hill. 2018.