Levy, H., & Lessman, F. (1959). Finite difference equations / by H. Levy and F. Lessman. Pitman.
Chicago Style (17th ed.) CitationLevy, Hyman, and F. Lessman. Finite Difference Equations / by H. Levy and F. Lessman. Pitman, 1959.
MLA (9th ed.) CitationLevy, Hyman, and F. Lessman. Finite Difference Equations / by H. Levy and F. Lessman. Pitman, 1959.
Warning: These citations may not always be 100% accurate.