India. Labour Bureau. (1991). Occupational wage survey, fourth round: Report on selected engineering industries (1987-88). Labour Bureau, Ministry of Labour, Govt. of India.
Παραπομπή σε μορφή Chicago (17η εκδ.)India. Labour Bureau. Occupational Wage Survey, Fourth Round: Report on Selected Engineering Industries (1987-88). [Chandigarh]: Labour Bureau, Ministry of Labour, Govt. of India, 1991.
Παραπομπή σε μορφή MLA (8th εκδ.)India. Labour Bureau. Occupational Wage Survey, Fourth Round: Report on Selected Engineering Industries (1987-88). Labour Bureau, Ministry of Labour, Govt. of India, 1991.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.