Gaya APA

Widyawan, K, W. (2015). Improving students' speaking skill by using their spoken audio recording (a classroom action research conducted at the eighth grade students of SMP BOPKRI Godean) . Yogyakarta: Fakultas FKIP Universitas Mercu Buana Yogyakarta.

Gaya MLA

Widyawan, Kristanto, Wahyu. "Improving students' speaking skill by using their spoken audio recording (a classroom action research conducted at the eighth grade students of SMP BOPKRI Godean)". Yogyakarta: Fakultas FKIP Universitas Mercu Buana Yogyakarta, 2015. Text.