(1989). Webster's unabridged dictionary of the English language. Portland House : Distributed by Crown Publishers.
Chicago-referens (17:e uppl.)Webster's Unabridged Dictionary of the English Language. New York: Portland House : Distributed by Crown Publishers, 1989.
MLA-referens (9:e uppl.)Webster's Unabridged Dictionary of the English Language. Portland House : Distributed by Crown Publishers, 1989.