Gaya APA

Zumakhsin, ., Mufarichah, Y. (2005). Progress: a contextual Approach to Learning English an English Texbook for Senior High School Grade XI . Jakarta: Ganeca Exact.

Gaya MLA

Zumakhsin, ., Mufarichah, Yulia. "Progress: a contextual Approach to Learning English an English Texbook for Senior High School Grade XI". Jakarta: Ganeca Exact, 2005. Text.