Παραπομπή APA

Gardner, M. (2001). Gardner's workout: Training the mind and entertaining the spirit. A.K Peters.

Παραπομπή Chicago Style

Gardner, Martin. Gardner's Workout: Training the Mind and Entertaining the Spirit. Natick, Mass.: A.K Peters, 2001.

Παραπομπή MLA

Gardner, Martin. Gardner's Workout: Training the Mind and Entertaining the Spirit. A.K Peters, 2001.