Burchfield, J. D. (1975). Lord Kelvin and the age of the earth. Science History Publications.
Citazione stile Chigago Style (17a edizione)Burchfield, Joe D. Lord Kelvin and the Age of the Earth. New York: Science History Publications, 1975.
Citatione MLA (9a ed.)Burchfield, Joe D. Lord Kelvin and the Age of the Earth. Science History Publications, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.