APA (7th ed.) Citation

Smith, P. K., & Cowie, H. (1988). Understanding children's development. Basil Blackwell.

Chicago Style (17th ed.) Citation

Smith, Peter K., and Helen Cowie. Understanding Children's Development. Oxford, UK ; New York, NY, USA: Basil Blackwell, 1988.

MLA (9th ed.) Citation

Smith, Peter K., and Helen Cowie. Understanding Children's Development. Basil Blackwell, 1988.