APA (7th ed.) Citation
Hardy, G. H., & Wright, E. M. (2003). An introduction to the theory of numbers (5th ed.). Clarendon Press.
Chicago Style (17th ed.) Citation
Hardy, G. H., and E. M. Wright. An Introduction to the Theory of Numbers. 5th ed. Oxford: Clarendon Press, 2003.
MLA (9th ed.) Citation
Hardy, G. H., and E. M. Wright. An Introduction to the Theory of Numbers. 5th ed. Clarendon Press, 2003.
Warning: These citations may not always be 100% accurate.