Cita APA

Hardy, G. H., Littlewood,J.E, & Polya,G. (1997). Inequalities. University Press.

Citación estilo Chicago

Hardy, G. H., Littlewood,J.E, y Polya,G. Inequalities. Cambridge [Eng.]: University Press, 1997.

Cita MLA

Hardy, G. H., et al. Inequalities. University Press, 1997.