Kinnear, N. B. (1925). "The Dates of Publication of the Plates of the Birds in Gray and Hardwicke's 'Illustrations of Indian Zoology' with a short Account of General Hardwicke". Ibis. 67 (2): 484–489. doi:10.1111/j.1474-919X.1925.tb02936.x.
Turner, I. M. (2015). "Thomas Hardwicke (1756–1835): botanical drawings and manuscripts from the Hardwicke Bequest in the British Library". Archives of Natural History. 42 (2): 236–244. doi:10.3366/anh.2015.0308. ISSN0260-9541.
Turner, I. M. (2015). "Thomas Hardwicke (1756–1835): botanical drawings and manuscripts from the Hardwicke Bequest in the British Library". Archives of Natural History. 42 (2): 236–244. doi:10.3366/anh.2015.0308. ISSN0260-9541.
Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN978-1-4214-0135-5. ("Hardwicke", p. 116).
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Turner, I. M. (2015). "Thomas Hardwicke (1756–1835): botanical drawings and manuscripts from the Hardwicke Bequest in the British Library". Archives of Natural History. 42 (2): 236–244. doi:10.3366/anh.2015.0308. ISSN0260-9541.