Radford, W. C. (1966). Staying longer at school. Australian Council for Educational Research.
Chicago-referens (17:e uppl.)Radford, William C. Staying Longer at School. Hawthorn: Australian Council for Educational Research, 1966.
MLA-referens (8:e uppl.)Radford, William C. Staying Longer at School. Australian Council for Educational Research, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.