Cita APA (7a ed.)

Romero, G. E., Valle, M. V. d., & Orellana, M. D. (2010). Gamma-ray absorption and the origin of the gamma-ray flare in Cygnus X-1.

Cita Chicago Style (17a ed.)

Romero, Gustavo Esteban, María Victoria del Valle, y Mariana Dominga Orellana. Gamma-ray Absorption and the Origin of the Gamma-ray Flare in Cygnus X-1. 2010.

Cita MLA (8a ed.)

Romero, Gustavo Esteban, et al. Gamma-ray Absorption and the Origin of the Gamma-ray Flare in Cygnus X-1. 2010.