Παραπομπή σε μορφή APA (7η εκδ.)

Pfeiffer, J. W. (1989). The Encyclopedia of group activities: 150 practical designs for successful facilitating. University Associates.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Pfeiffer, J. William. The Encyclopedia of Group Activities: 150 Practical Designs for Successful Facilitating. San Diego, Calif.: University Associates, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Pfeiffer, J. William. The Encyclopedia of Group Activities: 150 Practical Designs for Successful Facilitating. University Associates, 1989.