@book{216549,
	author = {BOLT, Brian  and Bambang Sumantri },
	title = {Lebih Banyak Lagi Permainan dan teka-teki Matematika Yang Mengasyikkan},
	publisher = {Gramedia Pustaka Utama},
	year = {1994},
	address = {Jakarta},
	edition = {2}
}