Cita APA (7th ed.)

Hardy, D. W., Walker, C. L., & Richman, F. (2009). Applied algebra: Codes, ciphers, and discrete algorithms (2nd ed.). CRC Press.

Cita Chicago (17th ed.)

Hardy, Darel W., Carol L. Walker, i Fred Richman. Applied Algebra: Codes, Ciphers, and Discrete Algorithms. 2nd ed. Boca Raton: CRC Press, 2009.

Cita MLA (9th ed.)

Hardy, Darel W., et al. Applied Algebra: Codes, Ciphers, and Discrete Algorithms. 2nd ed. CRC Press, 2009.