Gaya APA

Hariyanto, D., Hariyono, D, R. (2003). English Grammar For General Application (I). Surabaya: Gitamedia Press.

Gaya MLA

Hariyanto, Dony., Hariyono, Drs., Rudy. "English Grammar For General Application". I Surabaya: Gitamedia Press, 2003. Text.