Philippines. Department of Labor and Employment. (1987). Glossary of terms commonly used in labor and employment statistics. Department of Labor and Employment.
Chicago-referens (17:e uppl.)Philippines. Department of Labor and Employment. Glossary of Terms Commonly Used in Labor and Employment Statistics. Manila: Department of Labor and Employment, 1987.
MLA-referens (9:e uppl.)Philippines. Department of Labor and Employment. Glossary of Terms Commonly Used in Labor and Employment Statistics. Department of Labor and Employment, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.