Gaya APA
Lucas, Robert W.. (2012).
Customer Service (Skills For Success)(Fifth Edition) (5th ed.).
America:
McGraw-Hill.
Gaya Chicago
Lucas, Robert W..
Customer Service (Skills For Success)(Fifth Edition).
5th ed.
America:
McGraw-Hill,
2012.
Text.
Gaya MLA
Lucas, Robert W..
Customer Service (Skills For Success)(Fifth Edition).
5th ed.
America:
McGraw-Hill,
2012.
Text.
Gaya Turabian
Lucas, Robert W..
Customer Service (Skills For Success)(Fifth Edition).
5th ed.
America:
McGraw-Hill,
2012.
Print.