National Association of Elementary School Principals (U.S.). (1980). Principal. National Association of Elementary School Principals.
Цитирование в стиле Чикаго (17-е изд.)National Association of Elementary School Principals (U.S.). Principal. Arlington, Va.: National Association of Elementary School Principals, 1980.
Цитирование MLA (9-е изд.)National Association of Elementary School Principals (U.S.). Principal. National Association of Elementary School Principals, 1980.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.