Gaya APA
Hartanto, J, S.
(2009).
Accurate, Brief and Clear English Grammar
.
Surabaya:
PT Indahjaya Adipratama.
Gaya MLA
Hartanto, John, S..
"Accurate, Brief and Clear English Grammar".
Surabaya:
PT Indahjaya Adipratama,
2009.
Text.