Furfey, P. H. (1928). The measurement of developmental age. Catholic Education Press.
Chicago-referens (17:e uppl.)Furfey, Paul Hanly. The Measurement of Developmental Age. Washington, D.C.: Catholic Education Press, 1928.
MLA-referens (8:e uppl.)Furfey, Paul Hanly. The Measurement of Developmental Age. Catholic Education Press, 1928.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.