Cita APA (7a ed.)

Richardson, N. D., Gies, D. R., Henry, T. J., Fernández Lajús, E., & Okazaki, A. T. (2010). The Hα variations of η Carinae during the 2009.0 spectroscopic event.

Cita Chicago Style (17a ed.)

Richardson, N. D., D. R. Gies, T. J. Henry, Eduardo Fernández Lajús, y A. T. Okazaki. The Hα Variations of η Carinae During the 2009.0 Spectroscopic Event. 2010.

Cita MLA (8a ed.)

Richardson, N. D., et al. The Hα Variations of η Carinae During the 2009.0 Spectroscopic Event. 2010.