Paket super drill : soal-soal ulangan harian SMP / Mts kelas IX / Leni, Yongdae Hasti Kusuma Dewi Lala Isna Hasni Tristanti text Yogyakarta : Trans Idea Publishing, 2015 ind Bibliografi : hlm 336-337 Ujian URN:ISBN:978-602-7996-98-4