4 1 30 Barbara Primary Author Allan Pease Additional Author mixed material 9788497112 Yogyakarta Kreasi Total Media 2008 Andrew Matthews Primary Author mixed material 97995662174 Kentindo Publisher 2003 Persahabatan Kita Mengikis Perbedaan Leni Ariani Primary Author mixed material 9789793168395 Bandung PT Sarana Panca Karya Nusa 2007 Anadas Ra Primary Author mixed material 9789797224875 Surabaya Paramita 2007