1. The Petrography of the Cenomanian Limestone and the uppermost Upper Greensand in the Beer District, South Devon;Ali,1973
2. Physical Processes of Sedimentation;Allen,1970
3. Transgression of the Cretaceous Sea in South-West England;Hancock;Proc. Ussher Soc.,1969
4. Some Observations on the Chert Beds (Upper Greensand) of South-West England;Hart;Proc. Ussher Soc.,1973
5. The Cretaceous Rocks of Britain: Vol. II—The Lower and Middle Chalk of England;Jukes-Browne,1903