(1975). Teacher's study guide on the biology of human. UNesco.
Chicago-čujuhus (17. p.)Teacher's Study Guide on the Biology of Human. Paris: UNesco, 1975.
MLA-čujuhus (9. p.)Teacher's Study Guide on the Biology of Human. UNesco, 1975.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.