281, September, 1901. Nieden, Das Tierreich, Amphibia, anura 1, p.
"A Review of the Frogs of the Hyla bistincta Group"
William E. Duellman
The anura among the Amphibia are saltatory, but their leaps are usually single, or repeated only a few times, not sustained gallops.
"Hormones and Heredity"
J. T. Cunningham