Marshall editions Developments Ltd, Stewart, R., Jones, R., Gould, D., Mason, A., & Hawkes, N. (1997). Ideas that shaped our world: Great concepts of then and now. Thunder Bay Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarshall editions Developments Ltd, Robert Stewart, Roger Jones, David Gould, Antony Mason, और Nigel Hawkes. Ideas That Shaped Our World: Great Concepts of Then and Now. San Diego, CA: Thunder Bay Press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMarshall editions Developments Ltd, et al. Ideas That Shaped Our World: Great Concepts of Then and Now. Thunder Bay Press, 1997.
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