APA
(1980). Syllabi and courses for Delhi senior school certificate, 1982. New Delhi, India: Central Board of Secondary Education.
Chicago
1980. Syllabi and courses for Delhi senior school certificate, 1982. New Delhi, India: Central Board of Secondary Education.
Harvard
(1980). Syllabi and courses for Delhi senior school certificate, 1982. New Delhi, India: Central Board of Secondary Education.
MLA
Syllabi and courses for Delhi senior school certificate, 1982. New Delhi, India: Central Board of Secondary Education. 1980.
