APA
INDIA L. &. E. (. o., INDIA L. &. E. (. o., . (1958). National classification of occupations. New Delhi: Occupational information unit.
Chicago
INDIA LABOUR & EMPLOYMENT (Ministry of--), INDIA LABOUR & EMPLOYMENT (Ministry of--), . 1958. National classification of occupations. New Delhi: Occupational information unit.
Harvard
INDIA L. &. E. (. o., INDIA L. &. E. (. o., . (1958). National classification of occupations. New Delhi: Occupational information unit.
MLA
INDIA LABOUR & EMPLOYMENT (Ministry of--), INDIA LABOUR & EMPLOYMENT (Ministry of--), . National classification of occupations. New Delhi: Occupational information unit. 1958.
