Mandelstam, S., & Yourgrau, W. (1968). Variational principles in dynamics and quantum theory (3d ed.). Saunders College Publishing.
Citazione stile Chigago Style (17a edizione)Mandelstam, Stanley, e Wolfgang Yourgrau. Variational Principles in Dynamics and Quantum Theory. 3d ed. Philadelphia: Saunders College Publishing, 1968.
Citatione MLA (9a ed.)Mandelstam, Stanley, e Wolfgang Yourgrau. Variational Principles in Dynamics and Quantum Theory. 3d ed. Saunders College Publishing, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.