W, L. (1993). English for specific purposes: Dialogues for secretaries 1. Gramedia Pustaka Utama.
Chicago Style (17th ed.) CitationW, Lukito. English for Specific Purposes: Dialogues for Secretaries 1. Gramedia Pustaka Utama, 1993.
MLA (8th ed.) CitationW, Lukito. English for Specific Purposes: Dialogues for Secretaries 1. Gramedia Pustaka Utama, 1993.
Warning: These citations may not always be 100% accurate.