APA (7 वां संस्करण) प्रशस्ति पत्र

Schuller, R. (1985). The be happy attitudes: Eight postive attitudes that can transform your life. Word books.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Schuller, Robert. The Be Happy Attitudes: Eight Postive Attitudes That Can Transform Your Life. Texas: Word books, 1985.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Schuller, Robert. The Be Happy Attitudes: Eight Postive Attitudes That Can Transform Your Life. Word books, 1985.