Gaya APA
Hartanto, J, S.
(2009).
Accurate, Brief and Clear English Grammar
.
Surabaya:
Surabaya : Penerbit Indah.
Gaya MLA
Hartanto, John, S..
"Accurate, Brief and Clear English Grammar".
Surabaya:
Surabaya : Penerbit Indah,
2009.
Teks.