@book{199270,
	author = {SEMBIRING,  Suwah and M. Sudrajat},
	title = {Panduan Ujian Nasional IPA (IPA-Fisika, IPA-Biologi, IPA-Kimia) Kelas 3 SMP/MTs},
	publisher = {Yrama Widya},
	year = {2008},
	address = {Jakarta}
}