Παραπομπή APA

Struwe, M. (1990). Variational methods: Applications to nonlinear partial differential equations and Hamiltonian systems. Springer-Verlag.

Παραπομπή Chicago Style

Struwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems. New York: Springer-Verlag, 1990.

Παραπομπή MLA

Struwe, Michael. Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems. Springer-Verlag, 1990.