M. D. Leakey, J. Z. Young, E. M. Jope, and K. P. Oakley. Tracks and tools. Philos. Trans. R. Soc. Lond. B Biol. Sci., Royal Society, volume 292, issue 1057, pages 95-102, May 1981. K. P. Oakley, B. G. Campbell, and T. I. Molleson. Catalogue of Fossil Hominids, Part II : Europe. Catalogue of Fossil Hominids, Trustees of the British Museum (Natural History), Natural History Museum (London), 1971. K. P. Oakley. The Kanam jaw. Nature, nature.com, volume 185, pages 945-946, March 1960. K. P. Oakley. Swanscombe man. Proc. Geol. Assoc., Elsevier, volume 63, issue 4, pages 271-IN1, January 1952. M. A. C. Hinton, K. P. Oakley, H. G. Dines, W. B. R. King, A. S. Kennard, C. F. C. Hawkes, S. H. Warren, M. A. Cotton, W. E. L. G. Clark, and G. M. Morant. Report on the Swanscombe Skull. The Journal of the Royal Anthropological Institute of Great Britain and Ireland, JSTOR, volume 68, pages 17, January 1938.