Dury, G. (1966). The face of the earth. Penguin.
Cita Chicago (17th ed.)Dury, G.H. The Face of the Earth. Harmondsworth: Penguin, 1966.
Cita MLA (9th ed.)Dury, G.H. The Face of the Earth. Penguin, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.