Gaya APA

Surbakti, K. (2008). Improving student's writing skill through peer, group and reflective portfolio assessment (Vol. 30, No. 02, Tahun). : .

Gaya MLA

Surbakti, Karyamantha. "Improving student's writing skill through peer, group and reflective portfolio assessment". Vol. 30, No. 02, Tahun : , 2008. Text.