@book{224737,
	author = {Tim LOPI},
	title = {Langkah Sukses Menuju Olimpiade Ekonomi Edisi 2 (Teori dan Soal Latihan },
	publisher = {Lembaga Olimpiade Pendidikan Indoensia},
	year = {2011},
	address = {Jakarta},
	edition = {2}
}