Pfeiffer, J. W. (1989). The Encyclopedia of group activities: 150 practical designs for successful facilitating. University Associates.
Style de citation Chicago (17e éd.)Pfeiffer, J. William. The Encyclopedia of Group Activities: 150 Practical Designs for Successful Facilitating. San Diego, Calif.: University Associates, 1989.
Style de citation MLA (8e éd.)Pfeiffer, J. William. The Encyclopedia of Group Activities: 150 Practical Designs for Successful Facilitating. University Associates, 1989.
Attention : ces citations peuvent ne pas être correctes à 100%.