APA

Roll. No. 17, University of Delhi. Faculty of Education. Department of Education & University of Delhi. Faculty of Education. Department of Education. (1968). Investigation into the changing pattern of problems faced by children in late childhood preadolescence and adolescence. : .

Chicago

Roll. No. 17, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. 1968. Investigation into the changing pattern of problems faced by children in late childhood preadolescence and adolescence. : .

Harvard

Roll. No. 17, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. (1968). Investigation into the changing pattern of problems faced by children in late childhood preadolescence and adolescence. : .

MLA

Roll. No. 17, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. Investigation into the changing pattern of problems faced by children in late childhood preadolescence and adolescence. : . 1968.