Gaya APA
Rangkuti, Freddy. (2013).
Customer Service Statisfaction & Call Centre Berdasarkan ISO 9001 .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Rangkuti, Freddy.
Customer Service Statisfaction & Call Centre Berdasarkan ISO 9001.
Jakarta:
Gramedia Pustaka Utama,
2013.
Text.
Gaya MLA
Rangkuti, Freddy.
Customer Service Statisfaction & Call Centre Berdasarkan ISO 9001.
Jakarta:
Gramedia Pustaka Utama,
2013.
Text.
Gaya Turabian
Rangkuti, Freddy.
Customer Service Statisfaction & Call Centre Berdasarkan ISO 9001.
Jakarta:
Gramedia Pustaka Utama,
2013.
Print.