Rutherford, Pamela L., and Nicholas A. Cairns. “MORPHOLOGY, REPRODUCTION, SEASONAL ACTIVITY AND HABITAT USE OF A NORTHERN POPULATION OF THE SMOOTH GREENSNAKE (OPHEODRYS VERNALIS)”. Journal of North American Herpetology, Apr. 2020, pp. 1-7, https://doi.org/10.17161/jnah.vi.13613.