Citazione Stile APA (7a Edizione)

Pugh, G., & Duffy, B. (2006). Contemporary issues in the early years (4th edition.). Sage Publications/PCP.

Citazione stile Chigago Style (17a edizione)

Pugh, Gillian, e Bernadette Duffy. Contemporary Issues in the Early Years. 4th edition. Thousand Oaks, CA: Sage Publications/PCP, 2006.

Citatione MLA (8a ed.)

Pugh, Gillian, e Bernadette Duffy. Contemporary Issues in the Early Years. 4th edition. Sage Publications/PCP, 2006.