Philippines. Department of Labor and Employment. Bureau of Working Conditions. (1977). Work accidents. Department of Labor and Employment.
Citazione stile Chigago Style (17a edizione)Philippines. Department of Labor and Employment. Bureau of Working Conditions. Work Accidents. Manila: Department of Labor and Employment, 1977.
Citatione MLA (9a ed.)Philippines. Department of Labor and Employment. Bureau of Working Conditions. Work Accidents. Department of Labor and Employment, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.