International symposium on nonlinear differential equations and nonlinear mechanics :Colorado Spring, Colo, LaSalle, J. P., & Lefschetz, S. (1963). International symposium on nonlinear differential equations and nonlinear mechanics. Academic Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInternational symposium on nonlinear differential equations and nonlinear mechanics :Colorado Spring, Colo, Joseph Pierre LaSalle, এবং Solomon Lefschetz. International Symposium on Nonlinear Differential Equations and Nonlinear Mechanics. New York [etc.]: Academic Press, 1963.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিInternational symposium on nonlinear differential equations and nonlinear mechanics :Colorado Spring, Colo, et al. International Symposium on Nonlinear Differential Equations and Nonlinear Mechanics. Academic Press, 1963.