Gaya APA

tanjung, H, B, N., ph.d, P, G, S, M, H, P, I. (2019). Washback of Portfolio on Students Writing Skill at SMA Citra Islami 2017-2018 Academic Year . Jakarta: sekolah pascasarjana uhamka.

Gaya MLA

tanjung, H., Bahdin, Nur., ph.d, Prof.dr.h., Gunawan, Suryoputro,, M.hum;, Hamzah, Puadi, Ilyas,. "Washback of Portfolio on Students Writing Skill at SMA Citra Islami 2017-2018 Academic Year". Jakarta: sekolah pascasarjana uhamka, 2019. Text.