Glencoe Publishing Co & Foster, D. (1999). Interactive mathematics: Activities & investigations (Student resource book.). Glencoe/McGraw Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGlencoe Publishing Co और David Foster. Interactive Mathematics: Activities & Investigations. Student resource book. New York: Glencoe/McGraw Hill, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGlencoe Publishing Co और David Foster. Interactive Mathematics: Activities & Investigations. Student resource book. Glencoe/McGraw Hill, 1999.
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