APA (7th ed.) Citation

Clarke, R. W., & Towndrow, R. G. P. (1965). Rubidium and caesium. Pergamon Press.

Chicago Style (17th ed.) Citation

Clarke, R. W., and R. G. P. Towndrow. Rubidium and Caesium. Oxford: Pergamon Press, 1965.

MLA (8th ed.) Citation

Clarke, R. W., and R. G. P. Towndrow. Rubidium and Caesium. Pergamon Press, 1965.