APA (7th ed.) Citation

Smith, D. R. (1985). Singular-perturbation theory: An introduction with applications. Univ. Press.

Chicago Style (17th ed.) Citation

Smith, Donald R. Singular-perturbation Theory: An Introduction with Applications. Cambridge u.a: Univ. Press, 1985.

MLA (9th ed.) Citation

Smith, Donald R. Singular-perturbation Theory: An Introduction with Applications. Univ. Press, 1985.