Ref ID | Type | Author | Date | Title |
700
| Book | Conant, R., and J.T. Collins. | 1991 | A Field Guide to Reptiles and Amphibians of Eastern and Central North America. |
28371
| Journal Article | Farr, W.L., and M.R.J. Forstner. | 2015 | Eleutherodactylus cystignathoides campi (Rio Grande Chirping Frog). |
12065
| Journal Article | McCord, J.S., Jr. | 1993 | Geographic distribution. Syrrhophus cystignathoides campi. |
25944
| Database | Ueda, K., J. Belmonte, A. Shepard, P. Leary, and S. Loarie. | 2021 | iNaturalist.org |