APA (7th ed.) Citation

Hardy, G. H. (1966). The integration of functions of a single variable (2nd ed.). The University Press.

Chicago Style (17th ed.) Citation

Hardy, G. H. The Integration of Functions of a Single Variable. 2nd ed. Cambridge: The University Press, 1966.

MLA (9th ed.) Citation

Hardy, G. H. The Integration of Functions of a Single Variable. 2nd ed. The University Press, 1966.