Bibliography: p.113-114. _ Includes index.
Geology of the country around Boscastle and Holsworthy : (explanation of the inland areas of one-inch geological sheet 322 and 1:50,000 geological sheet 323, new series) by Institute of Geological Sciences. ISBN 0118805878. Published by H.M.S.O. in 1973. Publication and catalogue information, links to buy online and reader comments.