Παραπομπή σε μορφή APA (7η εκδ.)

National Association of Elementary School Principals (U.S.). (1980). Principal. National Association of Elementary School Principals.

Παραπομπή σε μορφή Chicago (17η εκδ.)

National Association of Elementary School Principals (U.S.). Principal. Arlington, Va.: National Association of Elementary School Principals, 1980.

Παραπομπή σε μορφή MLA (9th εκδ.)

National Association of Elementary School Principals (U.S.). Principal. National Association of Elementary School Principals, 1980.