APA Style
Rangkuti, F. (2013).
Customer service satisfaction & call center berdasarkan ISO 9001 .
:
PT. Gramedia Pustaka Utama.
MLA Style
Rangkuti, Freddy.
"Customer service satisfaction & call center berdasarkan ISO 9001".
:
PT. Gramedia Pustaka Utama,
2013.
Text.