Dyfyniad APA

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.

Dyfyniad Arddull Chicago

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.

Dyfyniad MLA

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.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.