Edwards, C. A. (1993). Agriculture and the environment: Papers presented at the International Conference on Agriculture and the Environment, 10-13 november 1991. Elsevier.
Chicago-čujuhus (17. p.)Edwards, Clive A. Agriculture and the Environment: Papers Presented at the International Conference on Agriculture and the Environment, 10-13 November 1991. Amsterdam: Elsevier, 1993.
MLA-čujuhus (9. p.)Edwards, Clive A. Agriculture and the Environment: Papers Presented at the International Conference on Agriculture and the Environment, 10-13 November 1991. Elsevier, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.