Gaya APA

Realization of politeness strategies in sending short messages service (SMS) by the fifth semester students of english department of HKBP Nommensen University. (2016). Medan: Universitas HKBP Nommensen.

Gaya MLA

Realization of politeness strategies in sending short messages service (SMS) by the fifth semester students of english department of HKBP Nommensen University. . Medan: Universitas HKBP Nommensen, 2016. Artikel.