APA

Roll No. 10, University of Delhi. Faculty of Education. Department of Education & University of Delhi. Faculty of Education. Department of Education. (1970). Investigation into relationship of study habbits, interest, attitude and intelligence with achievementin mathematics of the students of class IX of higher secondary schools of Delhi. : .

Chicago

Roll No. 10, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. 1970. Investigation into relationship of study habbits, interest, attitude and intelligence with achievementin mathematics of the students of class IX of higher secondary schools of Delhi. : .

Harvard

Roll No. 10, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. (1970). Investigation into relationship of study habbits, interest, attitude and intelligence with achievementin mathematics of the students of class IX of higher secondary schools of Delhi. : .

MLA

Roll No. 10, University of Delhi. Faculty of Education. Department of Education and University of Delhi. Faculty of Education. Department of Education. Investigation into relationship of study habbits, interest, attitude and intelligence with achievementin mathematics of the students of class IX of higher secondary schools of Delhi. : . 1970.