APA (7th ed.) Citation

Nash, J. M. (1962). Some perturbation methods for the study of unstable systems. [publisher not identified].

Chicago Style (17th ed.) Citation

Nash, James Mosely. Some Perturbation Methods for the Study of Unstable Systems. [College Station, Tex.]: [publisher not identified], 1962.

MLA (9th ed.) Citation

Nash, James Mosely. Some Perturbation Methods for the Study of Unstable Systems. [publisher not identified], 1962.