APA Style

Downie, M., Gray, D. (2011). CAN DO STUDENT'S BOOK 2 . : PT. ASTA ILMU SUKSES.

MLA Style

Downie, Michael., Gray, David. "CAN DO STUDENT'S BOOK 2". : PT. ASTA ILMU SUKSES, 2011. Buku Pengayaan Khusus Siswa.