Gaya APA

Gwee, J., Giokni, . (2010). Instant Quotations On Customer Service Excellence (ed. 1). Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Gwee, James., Giokni, . "Instant Quotations On Customer Service Excellence". ed. 1 Jakarta: Gramedia Pustaka Utama, 2010. Text.