Chopra, D. S. (1975). Industrial and labour references. Eastern Law House.
Chicago Style aipamenaChopra, D. S. Industrial and Labour References. Calcutta: Eastern Law House, 1975.
MLA aipamenaChopra, D. S. Industrial and Labour References. Eastern Law House, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.