240434 Pratt, J. (1997). The polytechnic experiment, 1965-1992. Buckingham : SRHE and Open Unuversity Press.
Chicago-čujuhus (17. p.)240434 Pratt, John. The Polytechnic Experiment, 1965-1992. Buckingham : SRHE and Open Unuversity Press, 1997.
MLA-čujuhus (9. p.)240434 Pratt, John. The Polytechnic Experiment, 1965-1992. Buckingham : SRHE and Open Unuversity Press, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.