APA (7 वां संस्करण) प्रशस्ति पत्र
CHAMPION, P. (1987). AN INVESTIGATION OF THE SENSORIMOTOR DEVELOPMENT OF DOWN'S SYNDROME INFANTS INVOLVED IN AN ECOLOGICALLY BASED EARLY INTERVENTION PROGRAMME: A LONGITUDINAL STUDY.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
CHAMPION, P. AN INVESTIGATION OF THE SENSORIMOTOR DEVELOPMENT OF DOWN'S SYNDROME INFANTS INVOLVED IN AN ECOLOGICALLY BASED EARLY INTERVENTION PROGRAMME: A LONGITUDINAL STUDY. 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
CHAMPION, P. AN INVESTIGATION OF THE SENSORIMOTOR DEVELOPMENT OF DOWN'S SYNDROME INFANTS INVOLVED IN AN ECOLOGICALLY BASED EARLY INTERVENTION PROGRAMME: A LONGITUDINAL STUDY. 1987.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.