Cita APA (7th ed.)

Hardy, G. H. (1971). Introduction to the theory of numbers (4th.). English Language book society.

Cita Chicago (17th ed.)

Hardy, G. H. Introduction to the Theory of Numbers. 4th. London: English Language book society, 1971.

Cita MLA (9th ed.)

Hardy, G. H. Introduction to the Theory of Numbers. 4th. English Language book society, 1971.