(2004). The world almanac and book of facts 2004. U.S.A: World Almanac Books.
Trích dẫn kiểu ChicagoThe World Almanac and Book of Facts 2004. U.S.A: World Almanac Books, 2004.
MLA引文The World Almanac and Book of Facts 2004. U.S.A: World Almanac Books, 2004.
警告:這些引文格式不一定是100%准確.