Παραπομπή APA

Dutka, A. (1994). AMA handbook for customer satisfaction. NTC business books.

Παραπομπή Chicago Style

Dutka, Alan. AMA Handbook for Customer Satisfaction. Illinois: NTC business books, 1994.

Παραπομπή MLA

Dutka, Alan. AMA Handbook for Customer Satisfaction. NTC business books, 1994.