APA (7th ed.) Citation

Keller, W. E. (1969). Helium-3 and helium-4. Plenum Press.

Chicago Style (17th ed.) Citation

Keller, W. E. Helium-3 and Helium-4. New York: Plenum Press, 1969.

MLA (8th ed.) Citation

Keller, W. E. Helium-3 and Helium-4. Plenum Press, 1969.