APA

Roll. No. 15, University of Delhi. Faculty of Education. Department of Education, Shri R. N. Mehrotra Gu & University of Delhi. Faculty of Education. Department of Education. (1959). Standardisation of an achievement test in geometry for class 9th boys of Delhi schools. : .

Chicago

Roll. No. 15, University of Delhi. Faculty of Education. Department of Education, Shri R. N. Mehrotra Gu and University of Delhi. Faculty of Education. Department of Education. 1959. Standardisation of an achievement test in geometry for class 9th boys of Delhi schools. : .

Harvard

Roll. No. 15, University of Delhi. Faculty of Education. Department of Education, Shri R. N. Mehrotra Gu and University of Delhi. Faculty of Education. Department of Education. (1959). Standardisation of an achievement test in geometry for class 9th boys of Delhi schools. : .

MLA

Roll. No. 15, University of Delhi. Faculty of Education. Department of Education, Shri R. N. Mehrotra Gu and University of Delhi. Faculty of Education. Department of Education. Standardisation of an achievement test in geometry for class 9th boys of Delhi schools. : . 1959.