APA (7th ed.) Citation

Sigel, I. E., & Hooper, F. H. (1968). Logical thinking in children : research based on Piaget's theory / by I.E. Sigel and F.H. Hooper: Research based on Piaget's theory. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Sigel, Irving E., and F. H. Hooper. Logical Thinking in Children : Research Based on Piaget's Theory / by I.E. Sigel and F.H. Hooper: Research Based on Piaget's Theory. Holt, Rinehart and Winston, 1968.

MLA (9th ed.) Citation

Sigel, Irving E., and F. H. Hooper. Logical Thinking in Children : Research Based on Piaget's Theory / by I.E. Sigel and F.H. Hooper: Research Based on Piaget's Theory. Holt, Rinehart and Winston, 1968.

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