APA (7th ed.) Citation

Rosales, J., & García-Sánchez, P. A. (2009). Numerical Semigroups (First.). Springer New York.

Chicago Style (17th ed.) Citation

Rosales, J.C, and P. A. García-Sánchez. Numerical Semigroups. First. New York, NY: Springer New York, 2009.

MLA (8th ed.) Citation

Rosales, J.C, and P. A. García-Sánchez. Numerical Semigroups. First. Springer New York, 2009.