Philippines. Bureau of Labor and Employment Statistics. (1990). Occupational wages survey. Department of Labor and Employment, Bureau of Labor and Employment Statistics.
Chicago-viite (17. p.)Philippines. Bureau of Labor and Employment Statistics. Occupational Wages Survey. Manila: Department of Labor and Employment, Bureau of Labor and Employment Statistics, 1990.
MLA-viite (9. p.)Philippines. Bureau of Labor and Employment Statistics. Occupational Wages Survey. Department of Labor and Employment, Bureau of Labor and Employment Statistics, 1990.
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