Gaya APA

W., L. (1986). English For Specific Purposes Dialogues for secretaries 2 (ed.1; Cet.1). Hoboken, NJ: .

Gaya MLA

W., Lukito. "English For Specific Purposes Dialogues for secretaries 2". ed.1; Cet.1 Hoboken, NJ: , 1986. .