Gaya APA

Fathuddin, ., Sondak, P. (1993). English for spesial purpose : salespersons / Piet Sondak; editor Fathuddin (Cet.1). Jakarta: Kesaint Blanc.

Gaya MLA

Fathuddin, ., Sondak, Piet. "English for spesial purpose : salespersons / Piet Sondak; editor Fathuddin". Cet.1 Jakarta: Kesaint Blanc, 1993. Textbook.