APA Style

., R, L. (2011). WORKBOOK 1 FOR ELEMENTARY - INTERMEDIATE LEARNERS OF ENGLISH AROUND THE WORLD (ENGLISH GRAMMAR AND HOW TO USE IT) . JAKARTA: MOBILE ENGLISH EPLUS.

MLA Style

., ROBBY, LOU. "WORKBOOK 1 FOR ELEMENTARY - INTERMEDIATE LEARNERS OF ENGLISH AROUND THE WORLD (ENGLISH GRAMMAR AND HOW TO USE IT)". JAKARTA: MOBILE ENGLISH EPLUS, 2011. Text.