Gaya APA
LUCAS, ROBERT. (2012).
CUSTOMER SERVICE : SKILLS FOR SUCCESS (EDISI KELIMA).
USA:
MCGRAW HILL.
Gaya Chicago
LUCAS, ROBERT.
CUSTOMER SERVICE : SKILLS FOR SUCCESS.
EDISI KELIMA
USA:
MCGRAW HILL,
2012.
Text.
Gaya MLA
LUCAS, ROBERT.
CUSTOMER SERVICE : SKILLS FOR SUCCESS.
EDISI KELIMA
USA:
MCGRAW HILL,
2012.
Text.
Gaya Turabian
LUCAS, ROBERT.
CUSTOMER SERVICE : SKILLS FOR SUCCESS.
EDISI KELIMA
USA:
MCGRAW HILL,
2012.
Print.