APA

Roll No. 24, University of Delhi. Faculty of Education. Department of Education & University of Delhi. Faculty of Education. Department of Education. (1969). Survey of the Professional activities of teachers of secondary schools under the contorl of the Directoate of Education, Delhi. : .

Chicago

Roll No. 24, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. 1969. Survey of the Professional activities of teachers of secondary schools under the contorl of the Directoate of Education, Delhi. : .

Harvard

Roll No. 24, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. (1969). Survey of the Professional activities of teachers of secondary schools under the contorl of the Directoate of Education, Delhi. : .

MLA

Roll No. 24, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. Survey of the Professional activities of teachers of secondary schools under the contorl of the Directoate of Education, Delhi. : . 1969.