APA (7 वां संस्करण) प्रशस्ति पत्र

Petroff, T., & Clary, J. T. (1990). Softball hitting: Fast and slow pitch. Athletic Institute.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Petroff, Tom, और Jack T. Clary. Softball Hitting: Fast and Slow Pitch. North Palm Beach, Fla.: Athletic Institute, 1990.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Petroff, Tom, और Jack T. Clary. Softball Hitting: Fast and Slow Pitch. Athletic Institute, 1990.