Gamon, D. Building mental muscle: Conditioning exercises for the six intelligence zones. Viva Books.
芝加哥风格引文Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.
MLA引文Gamon, David; Bragdon. Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones. Viva Books.
警告：这些引文格式不一定是100％准确.