Masticophis flagellum testaceus (SAY 1823)
| Notes on the herpetology of New Mexico, with a list of species known from that state John Van Denburgh (1924) Proceedings of the California Academy of Sciences 13: 189-230 | |
| The coachwhip snake Masticophis flagellum (Shaw): taxonomy and distribution Larry David Wilson (1971) Tulane Studies in Zoology and Botany 16(2): 31-99 |