Gaya APA

Tanka, J., Baker, L, R. (2007). Interactions 2 Listening/Speaking, Silver Edition . Ny: Mc Graw-Hill.

Gaya MLA

Tanka, Judith., Baker, Lida, R. "Interactions 2 Listening/Speaking, Silver Edition". Ny: Mc Graw-Hill, 2007. BUKU PENGAYAAN.