Citazione Stile APA (7a Edizione)

Keenan, T. (2002). An introduction to child development. SAGE Publications.

Citazione stile Chigago Style (17a edizione)

Keenan, Thomas. An Introduction to Child Development. London ; Thousand Oaks, Calif.: SAGE Publications, 2002.

Citatione MLA (8a ed.)

Keenan, Thomas. An Introduction to Child Development. SAGE Publications, 2002.