Gaya APA

Sianturi, S. (2017). Directive speech acts in group discussing used by sixth Ssmseter students of English Departement Of NOMENSEN HKBP University (Vol. 25, No. 3/ Oktober 2017). Medan: Universitas HKBP Nommensen.

Gaya MLA

Sianturi, Srisofian. "Directive speech acts in group discussing used by sixth Ssmseter students of English Departement Of NOMENSEN HKBP University". Vol. 25, No. 3/ Oktober 2017 Medan: Universitas HKBP Nommensen, 2017. Text.