APA (7th ed.) Citation

1877-1947, Hardy, G. H., Littlewood, J. E., & Polya, G. (1989). Inequalities (2nd ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

1877-1947, G. H. Hardy, John E. Littlewood, and George Polya. Inequalities. 2nd ed. Cambridge: Cambridge University Press, 1989.

MLA (8th ed.) Citation

1877-1947, et al. Inequalities. 2nd ed. Cambridge University Press, 1989.