Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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