Spitzer, D. SuperMotivation. New York: AMACOM, 1995 214 p. il. 0-8144-0286-0.
Spitzer, D. SuperMotivation. New York: AMACOM, 1995 214 p. il. 0-8144-0286-0.
Spitzer, D. (1995) SuperMotivation, New York: AMACOM 214 p. il. 0-8144-0286-0.
Spitzer, D. (1995). SuperMotivation. A Blueprint for Energizing Your Organization From Top to Bottom. New York: AMACOM, 214 p. il.
Spitzer D. SuperMotivation: A Blueprint for Energizing Your Organization From Top to Bottom. New York: AMACOM; 1995. p. 214 p. il. ISBN: 0-8144-0286-0.