Cita APA

Cappa, C. E., Niemelä, V. S., Martín, M., & McClure-Griffiths, N. M. (2005). HI bubbles surrounding southern optical ring nebulae: Anon (WR 23) and RCW 52. Web

Citación estilo Chicago

Cappa, Cristina Elisabet, Virpi Sinikka Niemelä, M. Martín, and N. M. McClure-Griffiths. HI Bubbles Surrounding Southern Optical Ring Nebulae: Anon (WR 23) and RCW 52. 2005.

Cita MLA

Cappa, Cristina Elisabet, Virpi Sinikka Niemelä, M. Martín, and N. M. McClure-Griffiths. HI Bubbles Surrounding Southern Optical Ring Nebulae: Anon (WR 23) and RCW 52. 2005.