Gaya APA

Purnamasari, I. (2019). Improving students' writing skill in writing procedure text through demonstration method at the ninth grade of mts al-mujahidin academic year of 2019-2020 . Bogor: Universitas Muhammadiyah Bogor Raya.

Gaya MLA

Purnamasari, Iis. "Improving students' writing skill in writing procedure text through demonstration method at the ninth grade of mts al-mujahidin academic year of 2019-2020". Bogor: Universitas Muhammadiyah Bogor Raya, 2019. Text.