Gaya APA

Hariyono, R., Hariyono, R. (). Creative English Conversations with One Hour System: Percakapan Bahasa Inggris ... . S.L.: Gitamedia Press.

Gaya MLA

Hariyono, Rudy., Hariyono, Rudy. "Creative English Conversations with One Hour System: Percakapan Bahasa Inggris ...". S.L.: Gitamedia Press, . Text.