West, W. M., & West, R. (1936). The story of modern progress with a preliminary survey of eariler progress (New ed.). Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWest, Willis Mason, और Ruth West. The Story of Modern Progress with a Preliminary Survey of Eariler Progress. New ed. Boston ; New York [etc.]: Allyn and Bacon, 1936.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWest, Willis Mason, और Ruth West. The Story of Modern Progress with a Preliminary Survey of Eariler Progress. New ed. Allyn and Bacon, 1936.
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