Gaya APA

Hariyanto, D., Haryono, R. (2003). English grammar for general application (Cet. 1). Surabaya: Gita.

Gaya MLA

Hariyanto, Dony., Haryono, Rudy. "English grammar for general application". Cet. 1 Surabaya: Gita, 2003. Text.