Citazione APA

National Association of Colliery Managers (London, England), & Association of Colliery Managers in India. (1961). Iron & coal. Industrial Newspapers (Fuel & Metallurgical).

Stile di citazione Chicago

National Association of Colliery Managers (London, England), e Association of Colliery Managers in India. Iron & Coal. London: Industrial Newspapers (Fuel & Metallurgical), 1961.

Citazione MLA

National Association of Colliery Managers (London, England), e Association of Colliery Managers in India. Iron & Coal. Industrial Newspapers (Fuel & Metallurgical), 1961.