International Labour Office & ebrary, Inc. (2009). Safety and health in underground coalmines. International Labour Office.
Цитирование в стиле Чикаго (17-е изд.)International Labour Office и Inc ebrary. Safety and Health in Underground Coalmines. Geneva: International Labour Office, 2009.
Цитирование MLA (9-е изд.)International Labour Office и Inc ebrary. Safety and Health in Underground Coalmines. International Labour Office, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.