Cita APA (7a ed.)

del Valle, M. V., Romero, G. E., & Orellana, M. D. (2009). On the nature of the episodic gamma-ray flare observed in Cygnus X-1.

Cita Chicago Style (17a ed.)

del Valle, Maria V., Gustavo E. Romero, y Mariana D. Orellana. On the Nature of the Episodic Gamma-ray Flare Observed in Cygnus X-1. 2009.

Cita MLA (8a ed.)

del Valle, Maria V., et al. On the Nature of the Episodic Gamma-ray Flare Observed in Cygnus X-1. 2009.