APA (7th ed.) Citation

Spencer, E. W. (1969). Introduction to the structure of the earth. McGraw-Hill.

Chicago Style (17th ed.) Citation

Spencer, Edgar Winston. Introduction to the Structure of the Earth. New York: McGraw-Hill, 1969.

MLA (9th ed.) Citation

Spencer, Edgar Winston. Introduction to the Structure of the Earth. McGraw-Hill, 1969.