APA (7th ed.) Citation

Cassels, J. W. S. (1965). An introduction to diophantine approximation. University Press.

Chicago Style (17th ed.) Citation

Cassels, J. W. S. An Introduction to Diophantine Approximation. Cambridge: University Press, 1965.

MLA (9th ed.) Citation

Cassels, J. W. S. An Introduction to Diophantine Approximation. University Press, 1965.