APA-viite

O M. Shankarana. (1979). Some Enviornmental correlates of over, normal and Under-achievers in Physics of Secondary School Students in standard IX.

Chicago-tyylinen lähdeviittaus

O M. Shankarana. Some Enviornmental Correlates of over, Normal and Under-achievers in Physics of Secondary School Students in Standard IX. 1979.

MLA-viite

O M. Shankarana. Some Enviornmental Correlates of over, Normal and Under-achievers in Physics of Secondary School Students in Standard IX. 1979.