APA (7th ed.) Citation

Wilks, J., & Betts, D. S. (1987). An introduction to liquid helium / J. Wilks and D.S. Betts (2nd ed.). Clarendon.

Chicago Style (17th ed.) Citation

Wilks, J., and D. S. Betts. An Introduction to Liquid Helium / J. Wilks and D.S. Betts. 2nd ed. Oxford: Clarendon, 1987.

MLA (9th ed.) Citation

Wilks, J., and D. S. Betts. An Introduction to Liquid Helium / J. Wilks and D.S. Betts. 2nd ed. Clarendon, 1987.

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