Gaya APA

Joko, P, T, R, Y, R. (2008). Interlanguage: english for senior high school students XII . Surabaya: PT Jepe Press Media Utama.

Gaya MLA

Joko, P,., Triyani,, R.P.S,., Yuliyanti,, R.. "Interlanguage: english for senior high school students XII". Surabaya: PT Jepe Press Media Utama, 2008. Text.