Tham khảo Bất đẳng thức

    • Hardy, G., Littlewood J.E., Polya, G. (1999). Inequalities. Cambridge Mathematical Library, Cambridge University Press. ISBN 0521052068. 
    • Beckenbach, E.F., Bellman, R. (1975). Introduction to Inequalities. Random House Inc. ISBN 0394015592. 
    • Drachman, Byron C., Cloud, Michael J. (1998). Inequalities: With Applications to Engineering. Springer-Verlag. ISBN 0387984046.