APA (7 वां संस्करण) प्रशस्ति पत्र

Spinelli, E., & Valério, G. (2006). When you are happy. Simon & Schuster Books for Young Readers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Spinelli, Eileen, और Geraldo Valério. When You Are Happy. New York: Simon & Schuster Books for Young Readers, 2006.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Spinelli, Eileen, और Geraldo Valério. When You Are Happy. Simon & Schuster Books for Young Readers, 2006.