Gaya APA

Manurung, H. (2011). Learner's English Grammar: Complete English Grammar Needed and Used: in School, in College (Cet. 1). Bogor: Great Media Publishing.

Gaya MLA

Manurung, Heldin. "Learner's English Grammar: Complete English Grammar Needed and Used: in School, in College". Cet. 1 Bogor: Great Media Publishing, 2011. Text.