Pugh, G., & Duffy, B. (2006). Contemporary issues in the early years (4th edition.). Sage Publications/PCP.
Chicago-referens (17:e uppl.)Pugh, Gillian, och Bernadette Duffy. Contemporary Issues in the Early Years. 4th edition. Thousand Oaks, CA: Sage Publications/PCP, 2006.
MLA-referens (8:e uppl.)Pugh, Gillian, och Bernadette Duffy. Contemporary Issues in the Early Years. 4th edition. Sage Publications/PCP, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.