Mason, J., Graham, A., & Johnston-Wilder, S. (2005). Developing thinking in algebra. Open University in association with Paul Chapman Pub. ; Sage Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMason, John, Alan Graham, और Sue Johnston-Wilder. Developing Thinking in Algebra. London : Thousand Oaks, Calif.: Open University in association with Paul Chapman Pub. ; Sage Publications, 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMason, John, et al. Developing Thinking in Algebra. Open University in association with Paul Chapman Pub. ; Sage Publications, 2005.
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