1. Upper Old Red Sandstone (Farlovian) Paleogeography in South Wales and the Welsh Borderland
2. Allen J. R. L. (1974) in The Upper Palaeozoic and post-Palaeozoic Rocks of Wales, The Devonian rocks of Wales and the Welsh Borderland, ed Owen T. R. (Univ Wales Press, Cardiff), pp 47–84.
3. Old Red Sandstone facies in external basins, with particular reference to southern Britain;Allen,1979
4. Figures et structures sedimentaires dans la zone intertidale de la partie orientale de la base du Mont-Saint-Michel;Bajard;Revue Geogr. Phys. Geol. dyn,1966
5. A transgressive shelf sequence exhibiting hummocky stratification; the Cape Sebastian Sandstone (Upper Cretaceous), southwestern Oregon