Tohutoro APA (7th ed.)

SPENCER, E. W. (1977). Introduction to the structure of the earth. McGraw-Hill Kogakusha.

Tohutoru Kātū Chicago (17th ed.)

SPENCER, Edgar W. Introduction to the Structure of the Earth. Tokyo: McGraw-Hill Kogakusha, 1977.

Tohutoro MLA (9th ed.)

SPENCER, Edgar W. Introduction to the Structure of the Earth. McGraw-Hill Kogakusha, 1977.