Gaya APA

Zumakhsin, ., Madjdi, H. (2004). Progress (A Contextual Approach to Learning English) 1 An English Textbook for Senior High School Year 1 : 2004 Curriculum . Jakarta: Ganeca Exact.

Gaya MLA

Zumakhsin, ., Madjdi, Hilal. "Progress (A Contextual Approach to Learning English) 1 An English Textbook for Senior High School Year 1 : 2004 Curriculum". Jakarta: Ganeca Exact, 2004. Text.