Cita APA (7th ed.)
Urban, P. (1968). Particles, currents, symmetries. Springer.
Cita Chicago (17th ed.)
Urban, Paul. Particles, Currents, Symmetries. Wien, New York: Springer, 1968.
Cita MLA (9th ed.)
Urban, Paul. Particles, Currents, Symmetries. Springer, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.