Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Smith, Peter K., i Helen Cowie. Understanding Children's Development. Oxford, UK: Basil Blackwell Ltd, 1988.

Cita MLA (9th ed.)

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