National Association of Elementary School Principals (U.S.). (1980). Principal. National Association of Elementary School Principals.
Chicagoスタイル(17版)引用形式National Association of Elementary School Principals (U.S.). Principal. Arlington, Va.: National Association of Elementary School Principals, 1980.
MLA(9版)引用形式National Association of Elementary School Principals (U.S.). Principal. National Association of Elementary School Principals, 1980.
警告: この引用は必ずしも正確ではありません.