Sibly, E. 1800. An universal system of natural history, including the natural history of man; the orang-outang; and whole tribe of simia; all the known quadrupeds, birds, fishes, and amphibious animals. London, The proprietor: vol. 3.
Sibly, E. 1794. An universal system of natural history. London, Champante and Whitrow. vol.3, pp.1-631.






