APA
India G. o. E. a. T. (. o., India G. o. E. a. T. (. o., . (1972). National classification of occupations. Delhi: Govt of India Press India.
Chicago
India Government of Employment and Training (Department of), India Government of Employment and Training (Department of), . 1972. National classification of occupations. Delhi: Govt of India Press India.
Harvard
India G. o. E. a. T. (. o., India G. o. E. a. T. (. o., . (1972). National classification of occupations. Delhi: Govt of India Press India.
MLA
India Government of Employment and Training (Department of), India Government of Employment and Training (Department of), . National classification of occupations. Delhi: Govt of India Press India. 1972.
