APA সাইটেশন

Lucas, R. W. (2005). Customer service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill.

শিকাগো স্টাইলে সাইটেশন

Lucas, Robert W. Customer Service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill, 2005.

এমএলএ সাইটেশন

Lucas, Robert W. Customer Service: Building Successful Skills for the Twenty-First Century. New York: McGraw - Hill, 2005.