Read, H. H., & Watson, J. (1968). Introduction to geology (Second edition.). Macmillan; St. Martin's Press.
Chicago Style (17th ed.) CitationRead, H. H., and Janet Watson. Introduction to Geology. Second edition. London, Melbourne [etc.] New York: Macmillan; St. Martin's Press, 1968.
MLA (8th ed.) CitationRead, H. H., and Janet Watson. Introduction to Geology. Second edition. Macmillan; St. Martin's Press, 1968.
Warning: These citations may not always be 100% accurate.