Cita APA (7a ed.)

Firpo, V., Bosch, G. L., & Morrell, N. I. (2005). New giant H II regions in the southern sky.

Cita Chicago Style (17a ed.)

Firpo, Verónica, Guillermo Luis Bosch, y Nidia Irene Morrell. New Giant H II Regions in the Southern Sky. 2005.

Cita MLA (8a ed.)

Firpo, Verónica, et al. New Giant H II Regions in the Southern Sky. 2005.