Citazione Stile APA (7a Edizione)

Gamon, D. Building mental muscle: Conditioning exercises for the six intelligence zones. Viva Books.

Citazione stile Chigago Style (17a edizione)

Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.

Citatione MLA (9a ed.)

Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.