| Click | Citation |
1
|
1547
| Clay, W. L. 1938. A synopsis of the North American water snakes of the genus Natrix. Copeia 1938:173–182. |
2
|
1549
| Cliburn, J. W. 1960. The phylogeny and zoogeography of North American Natrix. Dissertation, University of Alabama, Tuscaloosa, Alabama, USA. 319pp. |
3
|
4465
| Mount, R. H., and T. D. Schwaner. 1970. Taxonomic and distributional relationships between the water snakes Natrix taxispilota (Holbrook) and Natrix rhombifera (Hallowell). Herpetologica 26:76–82. |
4
|
4609
| Neill, W. T. 1954. Ranges and taxonomic allocations of amphibians and reptiles in the southeastern United States. Ross Allen's Reptile Institute, Publication of the Research Division 1:75–96, Silver Springs, Florida, USA. |