Columbia subject headings:
Labor unions--Malaysia.
Labor unions--Singapore.
Working class--Malaysia.
Working class--Singapore.
Harvard subject headings:
Labor and laboring classes--Malaysia.
Labor and laboring classes--Singapore.
Labor unions--Malaysia.
Labor unions--Singapore.
Labor--Malaysia.
Labor--Singapore.
Working class--Malaysia.
Working class--Singapore.
Princeton subject headings:
Labor unions--Malaysia.
Labor unions--Singapore.
Labor--Malaysia.
Labor--Singapore.