Gaya APA

Jones, C., Doff, A. (1998). Language in use : pre-intermediate self-study workbook / Adrian Doff, Christoper Jones (Cet.6). New York: .

Gaya MLA

Jones, Christoper., Doff, Adrian. "Language in use : pre-intermediate self-study workbook / Adrian Doff, Christoper Jones". Cet.6 New York: , 1998. Textbook.