Gaya APA

s, A. (2010). Economics 1 A : for Senior High School Grade X Semester 1 (Cet. 1). JAKARTA: ESIS THE INNOVATIVE LEARNING.

Gaya MLA

s, Alam. "Economics 1 A : for Senior High School Grade X Semester 1". Cet. 1 JAKARTA: ESIS THE INNOVATIVE LEARNING, 2010. Text.