(1973). Geology of the country around East Retford, Worksop and Gainsborough: Explanation of one-inch geological sheet 101, New series. HMSO.
Chicago-Zitierstil (17. Ausg.)Geology of the Country Around East Retford, Worksop and Gainsborough: Explanation of One-inch Geological Sheet 101, New Series. London: HMSO, 1973.
MLA-Zitierstil (9. Ausg.)Geology of the Country Around East Retford, Worksop and Gainsborough: Explanation of One-inch Geological Sheet 101, New Series. HMSO, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.