Cita APA (7a ed.)

Badagnani, D. O., Dova, M. T., Gómez Albarracín, F. A., Hansen, P. M., Mariazzi, A. G., Moreno, J. C., . . . Collaboration, T. P. A. (2009). Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory.

Cita Chicago Style (17a ed.)

Badagnani, Daniel Omar, et al. Upper Limit on the Cosmic-ray Photon Fraction at EeV Energies from the Pierre Auger Observatory. 2009.

Cita MLA (8a ed.)

Badagnani, Daniel Omar, et al. Upper Limit on the Cosmic-ray Photon Fraction at EeV Energies from the Pierre Auger Observatory. 2009.