Gaya APA

Soeprapto, ., Darwis, M. (2005). Lenked to The world English For SMA/MA Grade XII: science and sosial program . : Yudistira.

Gaya MLA

Soeprapto, ., Darwis, Mariana. "Lenked to The world English For SMA/MA Grade XII: science and sosial program". : Yudistira, 2005. Text.