1. Geology and geography of the London-North Sea Uplands in Wealden times;Allen;Geological Magazine,1954
2. The Wealden environment: Anglo-Paris Basin
3. Allen P. (1960) Proceedings of the Geologists’ Association (London), Strand-line pebbles in the mid-Hastings Beds and the geology of the London Uplands. General features. Jurassic pebbles, 71, pp 156–168.
4. Allen P. (1961) Proceedings of the Geologists’ Association (London), Strand-line pebbles in the mid-Hastings Beds and the geology of the London Uplands. Carboniferous pebbles, 72, pp 271–285.
5. L’age du Purbecko-Wealdien d’Angleterre;Allen;Mémoires du Bureau Récherches Géologique et Minières,1965