APA (7th ed.) Citation

Bellman, R., & Roth, R. (1986). Methods in approximation: Techniques for mathematical modelling. D. Reidel Pub. Co..

Chicago Style (17th ed.) Citation

Bellman, Richard, and Robert Roth. Methods in Approximation: Techniques for Mathematical Modelling. Dordrecht [Holland] ; Boston: D. Reidel Pub. Co., 1986.

MLA (9th ed.) Citation

Bellman, Richard, and Robert Roth. Methods in Approximation: Techniques for Mathematical Modelling. D. Reidel Pub. Co., 1986.