APA

National Association of Secondary School Principals, . (1967). National committee paper: Educating for work. Washington: National Association of Secondary School Principals.

Chicago

National Association of Secondary School Principals, . 1967. National committee paper: Educating for work. Washington: National Association of Secondary School Principals.

Harvard

National Association of Secondary School Principals, . (1967). National committee paper: Educating for work. Washington: National Association of Secondary School Principals.

MLA

National Association of Secondary School Principals, . National committee paper: Educating for work. Washington: National Association of Secondary School Principals. 1967.