Weaver, H. G. (1975). Mainspring of human progress (6. repr.). The Foundation for Economic Education, Inc.
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Chicago Style (17th ed.) Citation
Weaver, Henry Grady. Mainspring of Human Progress. 6. repr. New York: The Foundation for Economic Education, Inc, 1975.
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MLA (9th ed.) Citation
Weaver, Henry Grady. Mainspring of Human Progress. 6. repr. The Foundation for Economic Education, Inc, 1975.
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Warning: These citations may not always be 100% accurate.