Gaya APA
Pramono, P, R., HS, O.
(2009).
30 menit essay writing, writing is easy
.
Jogyakarta:
.
Gaya MLA
Pramono, Peni, R.., HS, Oktaviani.
"30 menit essay writing, writing is easy".
Jogyakarta:
,
2009.
Textbook.