Hall, D. W. (2017). Pipevine Swallowtail, Blue Swallowtail Battus philenor (Linnaeus 1771) (Insecta: Lepidoptera: Papilionidae: Papilioninae: Troidini): EENY-677/IN1170, 3/2017. EDIS, 2017(2). https://doi.org/10.32473/edis-in1170-2000 (Original work published October 10, 2000)