Gaya APA

W, L. (1990). Dialogues For Secretaries: English For Specifec Purposes Jilid.2 (--). Jakarta: Gramedia Pustaka Utama.

Gaya MLA

W, Lukito. "Dialogues For Secretaries: English For Specifec Purposes Jilid.2". -- Jakarta: Gramedia Pustaka Utama, 1990. Text.