Hall, Donald W., and Jerry F. Butler. “Spicebush Swallowtail Papilio (Pterourus) Troilus Linnaeus 1758 (Insecta: Lepidoptera: Papilionidae: Papilioninae): EENY636 IN1107, 11 2015”. EDIS, vol. 2015, no. 9, Dec. 2015, p. 11, doi:10.32473/edis-in1107-2015.