Gaya APA

Robby, L. (2006). Toefl Preparation Guide English Grammar: The Book You Wouldn't Want To Miss For Toefl iBT Writing Skills . : E Plus Mobile English.

Gaya MLA

Robby, Lou's.. "Toefl Preparation Guide English Grammar: The Book You Wouldn't Want To Miss For Toefl iBT Writing Skills". : E Plus Mobile English, 2006. Text.