Não informado. (1970). Measurement in education. National Council on Measurement in Education.
Chicago-referens (17:e uppl.)Não informado. Measurement in Education. Lansing, Mich: National Council on Measurement in Education, 1970.
MLA-referens (8:e uppl.)Não informado. Measurement in Education. National Council on Measurement in Education, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.