Gaya APA

Sawitri, R, D. (2007). The problems of teaching-learning TOEFL at STAIN Kediri in academic year 2006-2007 / Ratna Dewi Sawitri . Kediri: STAIN KEDIRI.

Gaya MLA

Sawitri, Ratna, Dewi. "The problems of teaching-learning TOEFL at STAIN Kediri in academic year 2006-2007 / Ratna Dewi Sawitri". Kediri: STAIN KEDIRI, 2007. Text.