Gaya APA
Lucas, Robert W. (2005).
CUSTOMER SERVICE .
America:
Mc Graw-Hill.
Gaya Chicago
Lucas, Robert W.
CUSTOMER SERVICE.
America:
Mc Graw-Hill,
2005.
Text.
Gaya MLA
Lucas, Robert W.
CUSTOMER SERVICE.
America:
Mc Graw-Hill,
2005.
Text.
Gaya Turabian
Lucas, Robert W.
CUSTOMER SERVICE.
America:
Mc Graw-Hill,
2005.
Print.