(1968). Developing countries of the Vorld. Bational Committee for Geography.
Chicago-čujuhus (17. p.)Developing Countries of the Vorld. Calcutta: Bational Committee for Geography, 1968.
MLA-čujuhus (9. p.)Developing Countries of the Vorld. Bational Committee for Geography, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.