VALLETUTTI, P. J., & SALPINO, A. O. (1979). Individualizing educational objectives and programs: A modular approach. University Park.
Chicago-čujuhus (17. p.)VALLETUTTI, Peter J., juo Anthony O. SALPINO. Individualizing Educational Objectives and Programs: A Modular Approach. Baltimore: University Park, 1979.
MLA-čujuhus (9. p.)VALLETUTTI, Peter J., juo Anthony O. SALPINO. Individualizing Educational Objectives and Programs: A Modular Approach. University Park, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.