Gaya APA

Zumakhsin, ., Mufarichah, Y. (2005). Progress (A Contextual Approach to Learning English) 2 An English Textbook for Senior High School : 2004 Curriculum . Bandung: Ganeca Exact.

Gaya MLA

Zumakhsin, ., Mufarichah, Yulia. "Progress (A Contextual Approach to Learning English) 2 An English Textbook for Senior High School : 2004 Curriculum". Bandung: Ganeca Exact, 2005. Text.