Waluyo, J., & Hariyanto. (2011). English Conversation: Complete Edition. Mahirsindo Utama.
Cita Chicago (17th ed.)Waluyo, J., i Hariyanto. English Conversation: Complete Edition. Mahirsindo Utama, 2011.
Cita MLA (9th ed.)Waluyo, J., i Hariyanto. English Conversation: Complete Edition. Mahirsindo Utama, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.