Phillips, J. L. (1969). The Origins of intellect: Piaget's theory. W.H. Freeman and Comp.
Chicago Style (17th ed.) CitationPhillips, John L.,Jr. The Origins of Intellect: Piaget's Theory. W.H. Freeman and Comp, 1969.
MLA (8th ed.) CitationPhillips, John L.,Jr. The Origins of Intellect: Piaget's Theory. W.H. Freeman and Comp, 1969.
Warning: These citations may not always be 100% accurate.