On the natural history and classification of quadrupeds.

Chicago citation style
Swainson, William, 1789-1855. On the natural history and classification of quadrupeds.. Retrieved from the Digital Public Library of America, https://archive.org/details/onnaturalhistory00swai. (Accessed December 14, 2018.)
APA citation style
Swainson, William, 1789-1855, On the natural history and classification of quadrupeds.. Retrieved from the Digital Public Library of America, https://archive.org/details/onnaturalhistory00swai
MLA citation style
Swainson, William, 1789-1855. Retrieved from the Digital Public Library of America <https://archive.org/details/onnaturalhistory00swai>.
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