National Federation of State High School Associations. Football officials manual. National Federation of State High School Associations.
Chicago Style (17th ed.) CitationNational Federation of State High School Associations. Football Officials Manual. Kansas City, Mo.: National Federation of State High School Associations.
MLA (9th ed.) CitationNational Federation of State High School Associations. Football Officials Manual. National Federation of State High School Associations.
Warning: These citations may not always be 100% accurate.