[* = student]
1974
- Sprules, W.G. 1974. Environmental factors and the incidence of neoteny in Ambystoma gracile (Baird) (Amphibia, Caudata). Can. J. Zool. 52: 1545-1552.
- Sprules, W.G. 1974. The adaptive significance of paedogenesis in North American species of Ambystoma (Amphibia, Caudata) - an hypothesis. Can. J. Zool. 52: 393-400.