(1994). The Smith Collection of Penny Arcade Machines and Related Memorabilia: September 16 and 17, 1994.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThe Smith Collection of Penny Arcade Machines and Related Memorabilia: September 16 and 17, 1994. New York, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रThe Smith Collection of Penny Arcade Machines and Related Memorabilia: September 16 and 17, 1994. 1994.
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