APA (7th ed.) Citation

Thackray, J. (1980). The age of the earth. Her Majesty's Stationery Office for the Institute of Geological Sciences.

Chicago Style (17th ed.) Citation

Thackray, John. The Age of the Earth. London: Her Majesty's Stationery Office for the Institute of Geological Sciences, 1980.

MLA (9th ed.) Citation

Thackray, John. The Age of the Earth. Her Majesty's Stationery Office for the Institute of Geological Sciences, 1980.