Engineering in chalk, 2018: title page (J.A. Lawrence, editor) page 269 (Imperial College of Science and Technology, London, United Kingdom)

Imperial College London WWW site, viewed October 4, 2018 (Dr James Lawrence is a senior lecturer in engineering geology/geotechnics ; he worked as a geologist in the petroleum industry before joining the University of Brighton and the University of Leeds ; then worked in the Siting Team at Radioactive Waste Management as the geological investigations manager)