APA (7th ed.) Citation

Ruark, A. E., & Urey, H. C. Atoms, molecules and quanta: In two volumes. Dover Publ.

Chicago Style (17th ed.) Citation

Ruark, Arthur E., and Harold Clayton Urey. Atoms, Molecules and Quanta: In Two Volumes. New York: Dover Publ.

MLA (9th ed.) Citation

Ruark, Arthur E., and Harold Clayton Urey. Atoms, Molecules and Quanta: In Two Volumes. Dover Publ.