Arch, D. (1993). Tricks for trainers: 57 more tricks and teasers guaranteed to add magic to your presentations. Resources for Organizations.
Cita Chicago (17th ed.)Arch, Dave. Tricks for Trainers: 57 More Tricks and Teasers Guaranteed to Add Magic to Your Presentations. [Minneapolis, MN?]: Resources for Organizations, 1993.
Cita MLA (9th ed.)Arch, Dave. Tricks for Trainers: 57 More Tricks and Teasers Guaranteed to Add Magic to Your Presentations. Resources for Organizations, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.