@book{216054,
	author = {SUPRIATNA, Upi and Jaka F, Lia M, dan Taufan H},
	title = {Super Master OSN Olimpiade Sains Nasional IPS SMP.MTS },
	publisher = {Yrama Widya},
	year = {2022},
	address = {Bandung },
	edition = {1}
}