Hardy, G. H., Wright, E. M., Heath-Brown, D. R., & Silverman, J. H. (2008). An introduction to the theory of numbers (6th ed. / [revised by D.R. Heath-Brown and J.H. Silverman].). Oxford University Press.

Hardy, Godfrey H., Edward Maitland Wright, D. Roger Heath-Brown, und Joseph H. Silverman. An Introduction to the Theory of Numbers. 6th ed. / [revised by D.R. Heath-Brown and J.H. Silverman]. Oxford University Press, 2008.