APA (7th ed.) Citation

Não informado. (1999). Shools in the middle. National Association of Secondary School Principals.

Chicago Style (17th ed.) Citation

Não informado. Shools in the Middle. Reston, Va: National Association of Secondary School Principals, 1999.

MLA (8th ed.) Citation

Não informado. Shools in the Middle. National Association of Secondary School Principals, 1999.

Warning: These citations may not always be 100% accurate.