Gaya APA
Manurung, Heldin. (2009).
Practical English Conversation (Revisi).
Jakarta:
Great Media.
Gaya Chicago
Manurung, Heldin.
Practical English Conversation.
Revisi
Jakarta:
Great Media,
2009.
Text.
Gaya MLA
Manurung, Heldin.
Practical English Conversation.
Revisi
Jakarta:
Great Media,
2009.
Text.
Gaya Turabian
Manurung, Heldin.
Practical English Conversation.
Revisi
Jakarta:
Great Media,
2009.
Print.