Gaya APA
Hariyono,Rudy, ., Hariyanto,Dony, . (2003).
English Grammar for genaral application .
Surabaya:
GitaMedia Press.
Gaya MLA
Hariyono,Rudy, ., Hariyanto,Dony, .
"English Grammar for genaral application".
Surabaya:
GitaMedia Press,
2003.
Textbook.