National Association of Secondary School Principals (U.S.). Division of Student Activities. (1988). Leadership for student activities. National Association of Secondary School Principals, Division of Student Activities.
Citação do estilo Chicago (17ª ed.)National Association of Secondary School Principals (U.S.). Division of Student Activities. Leadership for Student Activities. [Reston, Va.: National Association of Secondary School Principals, Division of Student Activities, 1988.
Citação MLA (9ª ed.)National Association of Secondary School Principals (U.S.). Division of Student Activities. Leadership for Student Activities. National Association of Secondary School Principals, Division of Student Activities, 1988.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.