Dunham, K. (1990). Geology of the Northern Pennine Orefield economic memoir covering the areas of 1:50,000 and one-inch geological sheets 19 and 25, and parts of 13, 24, 26, 31, 32 (England and Wales) / K.C. Dunham: Economic memoir covering the areas of 1:50,000 and one-inch geological sheets 19 and 25, and parts of 13, 24, 26, 31, 32 (England and Wales) (2nd ed.). H.M.S.O..
Chicago Style (17th ed.) CitationDunham, Kingsley. Geology of the Northern Pennine Orefield Economic Memoir Covering the Areas of 1:50,000 and One-inch Geological Sheets 19 and 25, and Parts of 13, 24, 26, 31, 32 (England and Wales) / K.C. Dunham: Economic Memoir Covering the Areas of 1:50,000 and One-inch Geological Sheets 19 and 25, and Parts of 13, 24, 26, 31, 32 (England and Wales). 2nd ed. London: H.M.S.O., 1990.
MLA (9th ed.) CitationDunham, Kingsley. Geology of the Northern Pennine Orefield Economic Memoir Covering the Areas of 1:50,000 and One-inch Geological Sheets 19 and 25, and Parts of 13, 24, 26, 31, 32 (England and Wales) / K.C. Dunham: Economic Memoir Covering the Areas of 1:50,000 and One-inch Geological Sheets 19 and 25, and Parts of 13, 24, 26, 31, 32 (England and Wales). 2nd ed. H.M.S.O., 1990.