APA (7th ed.) Citation

Hardy, G. H., & Wright, E. M. (2008). An introduction to the theory of numbers (sixth edition, new edition material.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Hardy, Godfrey H., and Edward M. Wright. An Introduction to the Theory of Numbers. sixth edition, new edition material. Oxford [u.a.]: Oxford Univ. Press, 2008.

MLA (9th ed.) Citation

Hardy, Godfrey H., and Edward M. Wright. An Introduction to the Theory of Numbers. sixth edition, new edition material. Oxford Univ. Press, 2008.

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