Gaya APA
Leo. (2007).
ENGLISH FOR ACADEMIC PURPOSE ESSAY WRITING .
Yogyakarta:
Andi.
Gaya Chicago
Leo.
ENGLISH FOR ACADEMIC PURPOSE ESSAY WRITING.
Yogyakarta:
Andi,
2007.
Text.
Gaya MLA
Leo.
ENGLISH FOR ACADEMIC PURPOSE ESSAY WRITING.
Yogyakarta:
Andi,
2007.
Text.
Gaya Turabian
Leo.
ENGLISH FOR ACADEMIC PURPOSE ESSAY WRITING.
Yogyakarta:
Andi,
2007.
Print.