Cawston, F.G. (1944)
The Shedding of Selachian Teeth and Its Relation to Tooth Replacement in Fishes and Reptiles. Copeia, 1944(3), 184–185
DOI: 10.2307/1437816

Cawston, F.G. (1938)
Normal Dentition of Sharks. Nature, 142(3602), 878
DOI: 10.1038/142878b0

Cawston, F.G. (1938)
Effects of Injury on the Teeth of Selachii. Nature, 142(3585), 118
DOI: 10.1038/142118b0