Gaya APA

Soraya, I., Saidah, I. (2011). Using problem based instruction method to improve students' English writing competence to the ninth year students of MTs Darul Hikmah Mojokerto : Iftitahus Saidah; pembimbing: Irma Soraya . Surabaya: Fakultas Tarbiyah.

Gaya MLA

Soraya, Irma.., Saidah, Iftitahus. "Using problem based instruction method to improve students' English writing competence to the ninth year students of MTs Darul Hikmah Mojokerto : Iftitahus Saidah; pembimbing: Irma Soraya". Surabaya: Fakultas Tarbiyah, 2011. Skripsi.