Cita APA (7a ed.)

Russell, H., Fabian, A., Sanders, J., Johnstone, R., Blundell, K., Brandt, W., & Crawford, C. (2009). The X-ray luminous cluster underlying the bright radio-quiet quasar H1821+643.

Cita Chicago Style (17a ed.)

Russell, H., A. Fabian, J. Sanders, R. Johnstone, K. Blundell, W. Brandt, y C. Crawford. The X-ray Luminous Cluster Underlying the Bright Radio-quiet Quasar H1821+643. 2009.

Cita MLA (9a ed.)

Russell, H., et al. The X-ray Luminous Cluster Underlying the Bright Radio-quiet Quasar H1821+643. 2009.