Gamon, D. Building mental muscle: Conditioning exercises for the six intelligence zones. Viva Books.
Cita Chicago Style (17a ed.)Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.
Cita MLA (9a ed.)Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.
Precaución: Estas citas no son 100% exactas.