(1972). Development and environment. United Nations.
Chicago-čujuhus (17. p.)Development and Environment. Geneva: United Nations, 1972.
MLA-čujuhus (9. p.)Development and Environment. United Nations, 1972.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.