Brodie ED Jr (1982). "Nerodia fasciata clarki, N. f. compressicauda, N. f. taeniata". Reptiles of North America: A Guide to Field Identification. New York: Golden Press. pp. 156–157. ISBN0-307-13666-3. Plates 1-48
Wright AH; Wright AA (1957). "Natrix sipedon clarki, N. s. compressicauda". Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock. pp. 515–522. 1,105 pp. (in 2 volumes) , Figures 151–154; N. f. taeniata, pp. 541–544, Figure 161; Map 40 on p. 491