Sapra, C. L. (1972). Measurement of educational wastage: A review of methodologies. National Council of Educational Research and Training.
Chicago-referens (17:e uppl.)Sapra, C. L. Measurement of Educational Wastage: A Review of Methodologies. [New Delhi]: National Council of Educational Research and Training, 1972.
MLA-referens (8:e uppl.)Sapra, C. L. Measurement of Educational Wastage: A Review of Methodologies. National Council of Educational Research and Training, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.