Punjab (India). Labour Dept. Research and Statistical Section. Punjab labour news. Research and Statistical Section, Labour Dept., Punjab.
Παραπομπή σε μορφή Chicago (17η εκδ.)Punjab (India). Labour Dept. Research and Statistical Section. Punjab Labour News. Chandigarh: Research and Statistical Section, Labour Dept., Punjab.
Παραπομπή σε μορφή MLA (8th εκδ.)Punjab (India). Labour Dept. Research and Statistical Section. Punjab Labour News. Research and Statistical Section, Labour Dept., Punjab.
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