APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (8वां संस्करण) प्रशस्ति पत्र

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