APA (7th ed.) Citation

Spencer, D. D., & Beatty, J. R. (1979). Sixty challenging problems with Basic solutions (2nd ed.). Hayden Books Company.

Chicago Style (17th ed.) Citation

Spencer, Donald D., and John R. Beatty. Sixty Challenging Problems with Basic Solutions. 2nd ed. Rochelle Park, New Jersey: Hayden Books Company, 1979.

MLA (9th ed.) Citation

Spencer, Donald D., and John R. Beatty. Sixty Challenging Problems with Basic Solutions. 2nd ed. Hayden Books Company, 1979.