Philippines (Republic). Department of Labor. Department of labor manual. [s.n.
Цитирование в стиле Чикаго (17-е изд.)Philippines (Republic). Department of Labor. Department of Labor Manual. Manila: [s.n.
Цитирование MLA (9-е изд.)Philippines (Republic). Department of Labor. Department of Labor Manual. [s.n.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.