Gaya APA

M.Sudarwati, . (2006). Look ahead an english course:for senior high school students year XII/M.Sudarwati . Jakarta: Erlangga.

Gaya MLA

M.Sudarwati, . "Look ahead an english course:for senior high school students year XII/M.Sudarwati". Jakarta: Erlangga, 2006. Text.