Cita APA (7th ed.)

National Association of Secondary School Principals (U.S.). (1981). Schools in the middle. The Association.

Cita Chicago (17th ed.)

National Association of Secondary School Principals (U.S.). Schools in the Middle. Reston, Va.: The Association, 1981.

Cita MLA (9th ed.)

National Association of Secondary School Principals (U.S.). Schools in the Middle. The Association, 1981.