Gaya APA
Hariyanto, D., Hariyono, R.
(2003).
English Course one week system
.
Surabaya:
Putra Pelajar.
Gaya MLA
Hariyanto, Dany., Hariyono, Rudy.
"English Course one week system".
Surabaya:
Putra Pelajar,
2003.
Text.