John Clark. (2019). Mad About Science: Light and Sound (Mad About Science) (UK ed.). Southwood Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohn Clark. Mad About Science: Light and Sound (Mad About Science). UK ed. Southwood Books, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJohn Clark. Mad About Science: Light and Sound (Mad About Science). UK ed. Southwood Books, 2019.
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