Cita APA (7a ed.)

Cappa, C. E., Niemelä, V. S., Amorín, R., & Vasquez, J. (2008). The environs of the H II region Gum 31.

Cita Chicago Style (17a ed.)

Cappa, Cristina Elisabet, Virpi Sinikka Niemelä, R. Amorín, y Javier Vasquez. The Environs of the H II Region Gum 31. 2008.

Cita MLA (8a ed.)

Cappa, Cristina Elisabet, et al. The Environs of the H II Region Gum 31. 2008.