Cita APA (7a ed.)

Alday, L., Maldacena, J., Sever, A., & Vieira, P. (2010). Y-system for scattering amplitudes.

Cita Chicago Style (17a ed.)

Alday, L., J. Maldacena, A. Sever, y P. Vieira. Y-system for Scattering Amplitudes. 2010.

Cita MLA (9a ed.)

Alday, L., et al. Y-system for Scattering Amplitudes. 2010.