APA (7th ed.) Citation

Bellman, R. (1964). Perturbation Techniques in Mathematics, Physics, and Engineering. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Bellman, Richard. Perturbation Techniques in Mathematics, Physics, and Engineering. Nueva York: Holt, Rinehart and Winston, 1964.

MLA (9th ed.) Citation

Bellman, Richard. Perturbation Techniques in Mathematics, Physics, and Engineering. Holt, Rinehart and Winston, 1964.