Muhammad, Y., Muhammad, (2003).English in use : a practical way to reach English fluency / Muhammad Yaumi; editor, Muhammad, M. (Ed.ke-2).Jakarta:Restu Agung.
Gaya MLA
Yaumi, Muhammad., Muhammad, ."English in use : a practical way to reach English fluency / Muhammad Yaumi; editor, Muhammad, M.".Ed.ke-2Jakarta:Restu Agung,2003.Textbook.