@book{223739,
	author = {TIM KGBS Matematika SMAK IPEKA},
	title = {Kumpulan Soal Matematika SMA 2b Kelas XI Semester 2},
	publisher = {Tim KGBS Matematika SMAK IPEKA},
	year = {2009},
	address = {Jakarta},
	edition = {7}
}