Nolan Ryan, Skip Bayless, Tom House (1991). “Nolan Ryan's Pitcher's Bible: The Ultimate Guide to Power, Precision, and Long-Term Performance”, p.30, Simon and Schuster
Nolan Ryan, Skip Bayless, Tom House (1991). “Nolan Ryan's Pitcher's Bible: The Ultimate Guide to Power, Precision, and Long-Term Performance”, p.30, Simon and Schuster
Nolan Ryan, Skip Bayless, Tom House (1991). “Nolan Ryan's Pitcher's Bible: The Ultimate Guide to Power, Precision, and Long-Term Performance”, p.35, Simon and Schuster