Crump, A. (1991). Dictionary of environment and development: People, places, ideas and organizations. Earthscan.
Chicago-čujuhus (17. p.)Crump, Andy. Dictionary of Environment and Development: People, Places, Ideas and Organizations. London: Earthscan, 1991.
MLA-čujuhus (9. p.)Crump, Andy. Dictionary of Environment and Development: People, Places, Ideas and Organizations. Earthscan, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.