Gaya APA
Freeland, J, G. (2003).
Strategies & Concepts For Building Customer Loyalty & Profitability .
Yogyakarta:
Salemba Empat.
Gaya MLA
Freeland, John, G.
"Strategies & Concepts For Building Customer Loyalty & Profitability".
Yogyakarta:
Salemba Empat,
2003.
Text.