APA (7th ed.) Citation

Posamentier, A. S., & Salkind, C. T. (1996). Challenging problems in algebra ([slightly altered republication of the 2. ed. 1988].). Dover.

Chicago Style (17th ed.) Citation

Posamentier, Alfred S., and Charles T. Salkind. Challenging Problems in Algebra. [slightly altered republication of the 2. ed. 1988]. New York: Dover, 1996.

MLA (9th ed.) Citation

Posamentier, Alfred S., and Charles T. Salkind. Challenging Problems in Algebra. [slightly altered republication of the 2. ed. 1988]. Dover, 1996.