Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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