Press, F., & Siever, R. (1974). Earth. W. H. Freeman and Co.
Citación estilo ChicagoPress, Frank, and Raymond Siever. Earth. San Francisco California: W. H. Freeman and Co, 1974.
Cita MLAPress, Frank, and Raymond Siever. Earth. W. H. Freeman and Co, 1974.
Warning: These citations may not always be 100% accurate.