APA (7th ed.) Citation

York, D., & Farquhar, R. M. (1973). The earth's age and geochronology (Repr.). Pergamon Pr.

Chicago Style (17th ed.) Citation

York, Derek, and Ronald M. Farquhar. The Earth's Age and Geochronology. Repr. Oxford: Pergamon Pr, 1973.

MLA (9th ed.) Citation

York, Derek, and Ronald M. Farquhar. The Earth's Age and Geochronology. Repr. Pergamon Pr, 1973.