Gaya APA

Gurning, B, A. (2015). (Im)Politeness : researches on linguistic politeness and linguistic impoliteness in different communities of practice in Indonesia . Medan: Departemen Pendidikan Nasional Badan Penelitian dan Pengembangan .

Gaya MLA

Gurning, Busmin...[et, Al.]. "(Im)Politeness : researches on linguistic politeness and linguistic impoliteness in different communities of practice in Indonesia". Medan: Departemen Pendidikan Nasional Badan Penelitian dan Pengembangan , 2015. Text.