Não informado. (1942). Journal of Education and Psychology. Sardar Patel University.
Chicago-referens (17:e uppl.)Não informado. Journal of Education and Psychology. Vallabh Vidyanagar, India: Sardar Patel University, 1942.
MLA-referens (8:e uppl.)Não informado. Journal of Education and Psychology. Sardar Patel University, 1942.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.