APA (7th ed.) Citation

York, D. (1972). The earth's age and geochronology. Pergamon Press.

Chicago Style (17th ed.) Citation

York, Derek. The Earth's Age and Geochronology. Oxford: Pergamon Press, 1972.

MLA (9th ed.) Citation

York, Derek. The Earth's Age and Geochronology. Pergamon Press, 1972.