APA (7th ed.) Citation

Wilks, J. (1970). An introduction to liquid helium. Clarendon Press.

Chicago Style (17th ed.) Citation

Wilks, John. An Introduction to Liquid Helium. Oxford: Clarendon Press, 1970.

MLA (9th ed.) Citation

Wilks, John. An Introduction to Liquid Helium. Clarendon Press, 1970.

Warning: These citations may not always be 100% accurate.