APA引文

Sarah Janssen. (2008). The WORLD almanac and book of facts 2008. World Almanac Books.

Chicago Style (17th ed.) Citation

Sarah Janssen. The WORLD Almanac and Book of Facts 2008. World Almanac Books, 2008.

MLA引文

Sarah Janssen. The WORLD Almanac and Book of Facts 2008. World Almanac Books, 2008.

警告：這些引文格式不一定是100％准確.