Osterbrock, D. E. (1974). Astrophysics of gaseous nebulae. W H Freeman.
Chicago Style aipamenaOsterbrock, Donald E. Astrophysics of Gaseous Nebulae. Sanfrancisco: W H Freeman, 1974.
MLA aipamenaOsterbrock, Donald E. Astrophysics of Gaseous Nebulae. W H Freeman, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.