Cita APA (7a ed.)

Valle, M. V. d., 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.)

Valle, María Victoria del, Gustavo Esteban Romero, y Mariana Dominga Orellana. On the Nature of the Episodic Gamma-ray Flare Observed in Cygnus X-1. 2009.

Cita MLA (8a ed.)

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