Gaya APA

Dowie, M, D, J, M. (2013). English Elevator International 2 (Workbook) . : PT Astra Ilmu Sukses.

Gaya MLA

Dowie, Michael, Dan, Juan, Manuel. "English Elevator International 2 (Workbook)". : PT Astra Ilmu Sukses, 2013. teks.