APA

(1980). Syllabi and courses for Delhi secondary school examination 1982 (classes 9th and 10th). New Delhi, India: Central Board of Secondary Education.

Chicago

1980. Syllabi and courses for Delhi secondary school examination 1982 (classes 9th and 10th). New Delhi, India: Central Board of Secondary Education.

Harvard

(1980). Syllabi and courses for Delhi secondary school examination 1982 (classes 9th and 10th). New Delhi, India: Central Board of Secondary Education.

MLA

Syllabi and courses for Delhi secondary school examination 1982 (classes 9th and 10th). New Delhi, India: Central Board of Secondary Education. 1980.