NASSP's Council on Middle Level Education. (1993). Achieving excellence through the middle level curriculum. National Association of Secondary School Principals.
Chicago Style (17th ed.) CitationNASSP's Council on Middle Level Education. Achieving Excellence Through the Middle Level Curriculum. Reston, Va.: National Association of Secondary School Principals, 1993.
MLA (9th ed.) CitationNASSP's Council on Middle Level Education. Achieving Excellence Through the Middle Level Curriculum. National Association of Secondary School Principals, 1993.
Warning: These citations may not always be 100% accurate.