Cita APA (7th ed.)

Mandelstam, S., & Yourgrau, W. (1968). Variational principles in dynamics and quantum theory (3d ed.). Saunders College Publishing.

Cita Chicago (17th ed.)

Mandelstam, Stanley, i Wolfgang Yourgrau. Variational Principles in Dynamics and Quantum Theory. 3d ed. Philadelphia: Saunders College Publishing, 1968.

Cita MLA (9th ed.)

Mandelstam, Stanley, i Wolfgang Yourgrau. Variational Principles in Dynamics and Quantum Theory. 3d ed. Saunders College Publishing, 1968.