Philippines. Bureau of Labor and Employment Statistics. (1990). Occupational wages survey. Department of Labor and Employment, Bureau of Labor and Employment Statistics.
Cita Chicago (17th ed.)Philippines. Bureau of Labor and Employment Statistics. Occupational Wages Survey. Manila: Department of Labor and Employment, Bureau of Labor and Employment Statistics, 1990.
Cita MLA (9th ed.)Philippines. Bureau of Labor and Employment Statistics. Occupational Wages Survey. Department of Labor and Employment, Bureau of Labor and Employment Statistics, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.