ZUG, G. R. (1993). Herpetology: An Introduction Biology Of Amphibians And Reptiles / George R. Zug. Academic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZUG, George R. Herpetology: An Introduction Biology Of Amphibians And Reptiles / George R. Zug. Academic Press, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZUG, George R. Herpetology: An Introduction Biology Of Amphibians And Reptiles / George R. Zug. Academic Press, 1993.
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