APA (7th ed.) Citation

Spencer, E. W. (1977). Introduction to the structure of the earth (2.ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Spencer, Edgar W. Introduction to the Structure of the Earth. 2.ed. New York: McGraw-Hill, 1977.

MLA (9th ed.) Citation

Spencer, Edgar W. Introduction to the Structure of the Earth. 2.ed. McGraw-Hill, 1977.