(1989). Webster's unabridged dictionary of the English language. Portland House : Distributed by Crown Publishers.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Webster's Unabridged Dictionary of the English Language. New York: Portland House : Distributed by Crown Publishers, 1989.
MLA -ийн эшлэл (9 дэх хэвлэлт)Webster's Unabridged Dictionary of the English Language. Portland House : Distributed by Crown Publishers, 1989.