Wilson, S. (1972). Learning is getting easier: Classrooms are becoming more responsive to individual students needs. Individual Learning Systems.
Chicago-viite (17. p.)Wilson, S.R. Learning Is Getting Easier: Classrooms Are Becoming More Responsive to Individual Students Needs. [San Rafael, Calif: Individual Learning Systems, 1972.
MLA-viite (9. p.)Wilson, S.R. Learning Is Getting Easier: Classrooms Are Becoming More Responsive to Individual Students Needs. Individual Learning Systems, 1972.
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