Simmons, I. (1989). Changing the face of the earth: Culture, environment, history. Basil Blackwell.
Chicago-čujuhus (17. p.)Simmons, I.G. Changing the Face of the Earth: Culture, Environment, History. Cambridge, Mass.: Basil Blackwell, 1989.
MLA-čujuhus (9. p.)Simmons, I.G. Changing the Face of the Earth: Culture, Environment, History. Basil Blackwell, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.