Crystal, D. (2004). The Penguin book of facts. New York: Penguin Books.
Chicago Style CitationCrystal, David. The Penguin Book of Facts. New York: Penguin Books, 2004.
MLA CitationCrystal, David. The Penguin Book of Facts. New York: Penguin Books, 2004.
Warning: These citations may not always be 100% accurate.