Gaya APA

(61413010), H, C. (2016). Women and Men Language Variation Features Found in BlackBerry Messenger . Surabaya: Universitas Widya Kartika.

Gaya MLA

(61413010), Helen, Christiana. "Women and Men Language Variation Features Found in BlackBerry Messenger". Surabaya: Universitas Widya Kartika, 2016. Text.