Donaldson, H. (1965). Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books.
Citazione stile Chigago Style (17a edizione)Donaldson, H. Coal. London: Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.
Citatione MLA (9a ed.)Donaldson, H. Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.