APA (7th ed.) Citation

Karoly, P., & Steffen, J. J. (1982). Improving children's competence. Lexington Books.

Chicago Style (17th ed.) Citation

Karoly, Paul, and John J. Steffen. Improving Children's Competence. Lexington, Mass.: Lexington Books, 1982.

MLA (9th ed.) Citation

Karoly, Paul, and John J. Steffen. Improving Children's Competence. Lexington Books, 1982.