Gaya APA

Setiawati, E. (2015). Students' Difficulties In Distinguishing The Simple Past Tense And The Pasr Perpect Tense . Bogor: FKIP Unpak.

Gaya MLA

Setiawati, Elih/031110082. "Students' Difficulties In Distinguishing The Simple Past Tense And The Pasr Perpect Tense". Bogor: FKIP Unpak, 2015. Skripsi English.