West, W. M. (1923). The story of modern progress: With a preliminary survey of earlier progress (Rev. ed.). Allyn and Bacon.
Citace podle Chicago (17th ed.)West, Willis M. The Story of Modern Progress: With a Preliminary Survey of Earlier Progress. Rev. ed. Boston ; New York [etc.]: Allyn and Bacon, 1923.
Citace podle MLA (8th ed.)West, Willis M. The Story of Modern Progress: With a Preliminary Survey of Earlier Progress. Rev. ed. Allyn and Bacon, 1923.
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