Citação norma APA

National Association of Secondary School Principals (U.S.). (2006). Principal's research review. National Association of Secondary School Principals.

Citação norma Chicago

National Association of Secondary School Principals (U.S.). Principal's Research Review. Reston, VA: National Association of Secondary School Principals, 2006.

Citação norma MLA

National Association of Secondary School Principals (U.S.). Principal's Research Review. National Association of Secondary School Principals, 2006.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.