Gaya APA
Futrell, C, M. (2004).
FUNDAMENTALS of Selling COSTOMERS FOR LIFE THOROUGH SERVICE (eighth).
Yogyakarta:
Salemba Empat.
Gaya MLA
Futrell, Charles, M.
"FUNDAMENTALS of Selling COSTOMERS FOR LIFE THOROUGH SERVICE".
eighth
Yogyakarta:
Salemba Empat,
2004.
Text.