APA Style
Tschohl, J., Franzmeier, S. (2003).
Achieving Excellence Through Customer Service .
Jakarta:
PT. Gramedia Pustaka Utama.
MLA Style
Tschohl, John., Franzmeier, Steve.
"Achieving Excellence Through Customer Service".
Jakarta:
PT. Gramedia Pustaka Utama,
2003.
Manajemen.