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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 9)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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..