Cita APA (7a ed.)

(2008). Upper limit on the cosmic-ray photon flux above 1019 eV using the surface detector of the Pierre Auger Observatory.

Cita Chicago Style (17a ed.)

Upper Limit on the Cosmic-ray Photon Flux Above 1019 EV Using the Surface Detector of the Pierre Auger Observatory. 2008.

Cita MLA (8a ed.)

Upper Limit on the Cosmic-ray Photon Flux Above 1019 EV Using the Surface Detector of the Pierre Auger Observatory. 2008.