APA (7th ed.) Citation

Wilks, J. (1987). An Introduction to liquid helium (2nd ed.). Clarendon Press.

Chicago Style (17th ed.) Citation

Wilks, John. An Introduction to Liquid Helium. 2nd ed. Oxford: Clarendon Press, 1987.

MLA (9th ed.) Citation

Wilks, John. An Introduction to Liquid Helium. 2nd ed. Clarendon Press, 1987.