APA
Bhatnagar Santosh Kumar, University of Delhi. Faculty of Education. Department of Education & University of Delhi. Faculty of Education. Department of Education. (1955). Investigation into the supervisory services of secondary education in Delhi state. : .
Chicago
Bhatnagar Santosh Kumar, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. 1955. Investigation into the supervisory services of secondary education in Delhi state. : .
Harvard
Bhatnagar Santosh Kumar, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. (1955). Investigation into the supervisory services of secondary education in Delhi state. : .
MLA
Bhatnagar Santosh Kumar, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. Investigation into the supervisory services of secondary education in Delhi state. : . 1955.
