Punjab (India). Labour Dept. Research and Statistical Section. Punjab labour news. Research and Statistical Section, Labour Dept., Punjab.
Chicago-referens (17:e uppl.)Punjab (India). Labour Dept. Research and Statistical Section. Punjab Labour News. Chandigarh: Research and Statistical Section, Labour Dept., Punjab.
MLA-referens (8:e uppl.)Punjab (India). Labour Dept. Research and Statistical Section. Punjab Labour News. Research and Statistical Section, Labour Dept., Punjab.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.