Change in education : insights from performance contracting /

gan Carpenter-Huffman, P.
Cyhoeddwyd 1974

The token economy system /

gan Lauridsen, David
Cyhoeddwyd 1978

Educational performance contracting /

gan Gramlich, Edward M., 1939-
Cyhoeddwyd 1975

Performance contracting in education--an appraisal: toward a balanced perspective.

Cyhoeddwyd 1972

Performance contracting in schools; profit motive tested as incentive to learning.

gan Mecklenburger, James
Cyhoeddwyd 1972