@book{199205,
	author = {CAYNE, Bernad S. and Sabrony Rachmadie},
	title = {Ilmu Pengetahuan Populer Jilid 2 : Astronomi dan Pengetahuan Ruang Angkasa  Komputer dan Matematika Ilmu pengetahuan Bumi},
	publisher = {Grolier International-Widyadara},
	year = {2005},
	address = {Jakarta}
}