Hillier, M. (1976). Automata & mechanical toys: An illustrated history / by Mary Hillier. Jupiter.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHillier, Mary. Automata & Mechanical Toys: An Illustrated History / by Mary Hillier. London: Jupiter, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHillier, Mary. Automata & Mechanical Toys: An Illustrated History / by Mary Hillier. Jupiter, 1976.
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