Gaya APA
Lucas, Robert W.. (2009).
Customer Service: Skills for Success (Fifth Edition).
New York:
McGraw-Hill.
Gaya Chicago
Lucas, Robert W..
Customer Service: Skills for Success.
Fifth Edition
New York:
McGraw-Hill,
2009.
Buku.
Gaya MLA
Lucas, Robert W..
Customer Service: Skills for Success.
Fifth Edition
New York:
McGraw-Hill,
2009.
Buku.
Gaya Turabian
Lucas, Robert W..
Customer Service: Skills for Success.
Fifth Edition
New York:
McGraw-Hill,
2009.
Buku.