SPENCER, E. W. (1977). Introduction to the structure of the earth. McGraw-Hill Kogakusha.
Chicago-čujuhus (17. p.)SPENCER, Edgar W. Introduction to the Structure of the Earth. Tokyo: McGraw-Hill Kogakusha, 1977.
MLA-čujuhus (9. p.)SPENCER, Edgar W. Introduction to the Structure of the Earth. McGraw-Hill Kogakusha, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.