Gaya APA
Leo, S.
(2007).
English for academic purpose:Essay writting / Susanto Leo
(
Ed.1)
.
Yogyakarta:
Andi.
Gaya MLA
Leo, Susanto.
"English for academic purpose:Essay writting / Susanto Leo".
Ed.1
Yogyakarta:
Andi,
2007.
Text.