APA (7th ed.) Citation

Phillips, J. L. (1969). The origins of intellect : Piaget's theory / by J.L. Phillips: Piaget's theory. W.H. Freeman.

Chicago Style (17th ed.) Citation

Phillips, J. L. The Origins of Intellect : Piaget's Theory / by J.L. Phillips: Piaget's Theory. W.H. Freeman, 1969.

MLA (9th ed.) Citation

Phillips, J. L. The Origins of Intellect : Piaget's Theory / by J.L. Phillips: Piaget's Theory. W.H. Freeman, 1969.

Warning: These citations may not always be 100% accurate.