Gaya APA

Sianipar, N, Y, B. (2020). The descriptive study of problem based learning in teaching writing at SMKN 6 Batam academic year 2019/2020 : skripsi . Batam: Universitas Riau Kepulauan Batam.

Gaya MLA

Sianipar, Novita, Yulinda, BR. "The descriptive study of problem based learning in teaching writing at SMKN 6 Batam academic year 2019/2020 : skripsi". Batam: Universitas Riau Kepulauan Batam, 2020. Text.