Spencer, E. W. (1977). Introduction to the Structure of the Earth (Second.). McGraw Hill.
Chicago Edition CitationSpencer, Edgar W. Introduction to the Structure of the Earth. Second. Tokyo: McGraw Hill, 1977.
MLA Edition CitationSpencer, Edgar W. Introduction to the Structure of the Earth. Second. McGraw Hill, 1977.
Warning: These citations may not always be 100% accurate.