Kupershmidt, B. A. (1992). The variational principles of dynamics. World Scientific.
Chicago Style aipamenaKupershmidt, Boris A. The Variational Principles of Dynamics. Singapore: World Scientific, 1992.
MLA aipamenaKupershmidt, Boris A. The Variational Principles of Dynamics. World Scientific, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.