1. Petrology, origin and deposition of the highest Lower Old Red Sandstone of Shropshire, England;Allen;J. Sediment. Petrol.,1962
2. Pre-Pickwell Down age of the Plateau Beds (Upper Devonian) in South Wales;Allen;Nature,1964
3. Upper Old Red Sandstone (Farlovian) palaeogeography in South Wales and the Welsh borderland;Allen;J. Sediment. Petrol.,1965
4. Late Quaternary Niger delta, and adjacent areas: sedimentary environments and lithofacies;Allen;Bull. Am. Assoc. Petrol. Geologists,1965
5. Holocene coral banks and subsidence in the Niger delta;Allen;J. Geol.,1962