Gaya APA
Essay writng english for academic purposes. (2013).
Yogyakarta:
Andi Offset.
Gaya Chicago
Essay writng english for academic purposes.
.
Yogyakarta:
Andi Offset,
2013.
Text.
Gaya MLA
Essay writng english for academic purposes.
.
Yogyakarta:
Andi Offset,
2013.
Text.
Gaya Turabian
Essay writng english for academic purposes.
Yogyakarta:
Andi Offset,
2013.
Print.