Cita APA (7a ed.)

Hardy, G. H., Littlewood, J. E. 1., & Pólya, G. 1. (1959). Inequalities (2a. ed.). University press.

Cita Chicago Style (17a ed.)

Hardy, Godfrey Harold, John Edinsor 1885 Littlewood, y George 1887 Pólya. Inequalities. 2a. ed. Cambridge: University press, 1959.

Cita MLA (8a ed.)

Hardy, Godfrey Harold, et al. Inequalities. 2a. ed. University press, 1959.