Gaya APA

Soeprapto, ., Darwis, M. (2005). Lenked to The World English for SMS/MA Grade X . JAKARTA: Yudistira.

Gaya MLA

Soeprapto, ., Darwis, Mariana. "Lenked to The World English for SMS/MA Grade X". JAKARTA: Yudistira, 2005. Text.