Marx, M. (1970). Learning interactions. The Macmillan Co. of India.
Chicago-čujuhus (17. p.)Marx, M. Learning Interactions. London: The Macmillan Co. of India, 1970.
MLA-čujuhus (9. p.)Marx, M. Learning Interactions. The Macmillan Co. of India, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.