APA
Zikmund, . (2001). Marketing : creating and keeping customers in an e-commerce world. Thomson Learning, Singapore: .
Chicago
Zikmund, . 2001. Marketing : creating and keeping customers in an e-commerce world. Thomson Learning, Singapore: .
Harvard
Zikmund, . (2001). Marketing : creating and keeping customers in an e-commerce world. Thomson Learning, Singapore: .
MLA
Zikmund, . Marketing : creating and keeping customers in an e-commerce world. Thomson Learning, Singapore: . 2001.