MLA

Harrell, Gilbert D. Marketing : Connecting with Customers. 2nd ed. Upper Saddle River: Prentice Hall, .200.

APA

Harrell, G. D. (.200). Marketing : connecting with customers. 2nd ed. Upper Saddle River: Prentice Hall.

Chicago

Harrell, Gilbert D., Marketing: Connecting with Customers. 2nd ed. Upper Saddle River: Prentice Hall, .200.