Armour, R. W. (1976). The happy bookers: A playful history of librarians and their world from the stone age to the distant future. McGraw-Hill Book Company.
Citace podle Chicago (17th ed.)Armour, Richard Willard. The Happy Bookers: A Playful History of Librarians and Their World from the Stone Age to the Distant Future. New York: McGraw-Hill Book Company, 1976.
Citace podle MLA (9th ed.)Armour, Richard Willard. The Happy Bookers: A Playful History of Librarians and Their World from the Stone Age to the Distant Future. McGraw-Hill Book Company, 1976.
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