Gaya APA

Education, C, P, &, D, D, M, O. (2008). Upper Secondary Social Studies 3 Activity Book Special Express (SMP) . Singapore: EPB Pan Pacific.

Gaya MLA

Education, Curriculum, Planning, &, Development, Division, Ministry, Of. "Upper Secondary Social Studies 3 Activity Book Special Express (SMP)". Singapore: EPB Pan Pacific, 2008. Text.