@book{186068,
	author = {YUSUF, Yasin, S.Pd and AULIYA, Umi, S.Pd},
	title = {Sirkuit Pintar Melejitkan Kemampuan Matematika & Bahasa Inggris dengan Metode Ular Tangga},
	publisher = {Visimedia},
	year = {2011},
	address = {Jakarta},
	note = {CD Program }
}