Scheaffer, R. L. [. a. (2004). Activity-based statistics: Student guide (Second edition.). Key College Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScheaffer, Richard L. [et al.]. Activity-based Statistics: Student Guide. Second edition. Emeryville: Key College Publishing, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रScheaffer, Richard L. [et al.]. Activity-based Statistics: Student Guide. Second edition. Key College Publishing, 2004.
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