Gaya APA

Khairiyah, U. (2019). An analysis of derivational affixes in the speech of president Barack Obama: skripsi . Batam: Universitas Riau Kepulauan Batam.

Gaya MLA

Khairiyah, Ummul. "An analysis of derivational affixes in the speech of president Barack Obama: skripsi". Batam: Universitas Riau Kepulauan Batam, 2019. Text.