Wilhelms, F. T. (1973). Supervision in a new key. Association for Supervision and Curriculum Development.
Style de citation Chicago (17e éd.)Wilhelms, Fred T. Supervision in a New Key. Washington: Association for Supervision and Curriculum Development, 1973.
Style de citation MLA (9e éd.)Wilhelms, Fred T. Supervision in a New Key. Association for Supervision and Curriculum Development, 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.