Hyslop NL, Cooper RJ, Meyers JM (2009). "Seasonal shifts in shelter and microhabitat use of Drymarchon couperi (eastern indigo snake) in Georgia". Copeia. 2009 (3): 458–464. doi:10.1643/ch-07-171. S2CID52462723.
Diemer, Joan E.; Speake, Dan W. (1983). "The distribution of the Eastern Indigo Snake, Drymarchon corais couperi, in Georgia". Journal of Herpetology. 17 (3): 256–264. doi:10.2307/1563828. JSTOR1563828.
Diemer, J.E.; Speake, D.W. (1983). "The Distribution of the Eastern Indigo Snake, Drymarchon Corais Couperi, in Georgia". Journal of Herpetology. 3 (17): 256. doi:10.2307/1563828. JSTOR1563828.
Diemer, Joan E.; Speake, Dan W. (1983). "The distribution of the Eastern Indigo Snake, Drymarchon corais couperi, in Georgia". Journal of Herpetology. 17 (3): 256–264. doi:10.2307/1563828. JSTOR1563828.
Diemer, J.E.; Speake, D.W. (1983). "The Distribution of the Eastern Indigo Snake, Drymarchon Corais Couperi, in Georgia". Journal of Herpetology. 3 (17): 256. doi:10.2307/1563828. JSTOR1563828.
Hyslop NL, Cooper RJ, Meyers JM (2009). "Seasonal shifts in shelter and microhabitat use of Drymarchon couperi (eastern indigo snake) in Georgia". Copeia. 2009 (3): 458–464. doi:10.1643/ch-07-171. S2CID52462723.
"Eastern indigo snake". Smithsonian's National Zoo. 25 April 2016. Retrieved 26 April 2022.
state.al.us
dcnr.state.al.us
"Snakes in Alabama". Outdoor Alabama. Alabama Department of Conservation and Natural Resources. Archived from the original on 27 May 2012. Retrieved 6 June 2012.
"Snakes in Alabama". Outdoor Alabama. Alabama Department of Conservation and Natural Resources. Archived from the original on 27 May 2012. Retrieved 6 June 2012.
Wright, Albert Hazen; Wright, Anna Allen (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock Publishing Associates, a division of Cornell University Press. 1,105 pp. (in two volumes). (Drymarchon corais couperi, pp. 200–203, Figures 20 & 64, Map 21).