S. P. Graham, E. K. Timpe, S. K. Hoss, M. Alcorn, and J. Deitloff, “Notes on Reproduction in the Brownback Salamander (Eurycea aquatica)”, RandA, vol. 17, no. 3, pp. 168–172, Sep. 2010, doi: 10.17161/randa.v17i3.16108.