Gaya APA
Manurung, Heldin. (2011).
Learner's English Grammar : Complete English Grammar Needed and Used .
Bogor:
Great Media.
Gaya Chicago
Manurung, Heldin.
Learner's English Grammar : Complete English Grammar Needed and Used.
Bogor:
Great Media,
2011.
Teks.
Gaya MLA
Manurung, Heldin.
Learner's English Grammar : Complete English Grammar Needed and Used.
Bogor:
Great Media,
2011.
Teks.
Gaya Turabian
Manurung, Heldin.
Learner's English Grammar : Complete English Grammar Needed and Used.
Bogor:
Great Media,
2011.
Teks.