APA引文

Janssen, S. 1. (2014). The World almanac and book of facts, 2014. World Almanac Books.

Chicago Style (17th ed.) Citation

Janssen, Sarah 1982. The World Almanac and Book of Facts, 2014. New York: World Almanac Books, 2014.

MLA引文

Janssen, Sarah 1982. The World Almanac and Book of Facts, 2014. World Almanac Books, 2014.