(2001). The World book encyclopedia: H. V.9. World book, Inc.
Trích dẫn kiểu ChicagoThe World Book Encyclopedia: H. V.9. World book, Inc, 2001.
MLA引文The World Book Encyclopedia: H. V.9. World book, Inc, 2001.
警告：這些引文格式不一定是100％准確.
APA引文