Ashby, E. (1978). Reconciling man with the environment. Oxford.
Chicago-čujuhus (17. p.)Ashby, Eric. Reconciling Man with the Environment. London: Oxford, 1978.
MLA-čujuhus (9. p.)Ashby, Eric. Reconciling Man with the Environment. Oxford, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.