APA (7th ed.) Citation
Gelman, R., & Gallistel, C. R. (1978). The child's understanding of number. Harvard University Press.
Chicago Style (17th ed.) Citation
Gelman, Rochel, and C. R. Gallistel. The Child's Understanding of Number. Cambridge, MA: Harvard University Press, 1978.
MLA (9th ed.) Citation
Gelman, Rochel, and C. R. Gallistel. The Child's Understanding of Number. Harvard University Press, 1978.
Warning: These citations may not always be 100% accurate.