(1976). Educational technology for individualised learning / edited for the Association for Programmed Learning and Educational Technology by John Clarke and John Leedham.
Chicago-čujuhus (17. p.)Educational Technology for Individualised Learning / Edited for the Association for Programmed Learning and Educational Technology by John Clarke and John Leedham. 1976.
MLA-čujuhus (9. p.)Educational Technology for Individualised Learning / Edited for the Association for Programmed Learning and Educational Technology by John Clarke and John Leedham. 1976.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.