Gaya APA

PUSPITANINGRUM, F. (2007). Classroom interaction in english language class at the first year students of sma 2 al islam . : Universitas Sebelas Maret.

Gaya MLA

PUSPITANINGRUM, Firdaus. "Classroom interaction in english language class at the first year students of sma 2 al islam". : Universitas Sebelas Maret, 2007. Skripsi.