Gaya APA

Rahardi, R, K., Ransus, F. (2009). Communicative English for Office and Administrative Assistants (edisi 1). Depok: Gratama.

Gaya MLA

Rahardi, R., Kunjana., Ransus, Fransiskus. "Communicative English for Office and Administrative Assistants". edisi 1 Depok: Gratama, 2009. Text.