TRAVERS, R. M. (1982). Essentials of learning.-- ed.5. Macmillan.
Chicago-čujuhus (17. p.)TRAVERS, Robert MW. Essentials of Learning.-- Ed.5. New York: Macmillan, 1982.
MLA-čujuhus (9. p.)TRAVERS, Robert MW. Essentials of Learning.-- Ed.5. Macmillan, 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.