(1981). International journal of educational development. [Pergamon].
Chicago-čujuhus (17. p.)International Journal of Educational Development. [Oxford]: [Pergamon], 1981.
MLA-čujuhus (9. p.)International Journal of Educational Development. [Pergamon], 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.