Cita APA (7th ed.)

Donaldson, H. (1965). Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books.

Cita Chicago (17th ed.)

Donaldson, H. Coal. London: Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.

Cita MLA (9th ed.)

Donaldson, H. Coal. Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1965.