Tennis Rules Illustrated by George (ed) Sullivan - Paperback - Second Printing - 1981 - from Book Nook Monroe (SKU: 303041)
USTA Atlanta | JTT Rules
National Federation of State High School Associations - Although the NFHS doesn't write the rules for high school tennis, we work closely with the United States Tennis Association - USTA (Official) to
Official rules of tennis - Killeen City Library System