Davies, R., Burstein, D., Dressler, A., Faber, S., Lyndenbell, D., Terlevich, R., & Wegner, G. (1987). SPECTROSCOPY AND PHOTOMETRY OF ELLIPTIC GALAXIES .2. THE SPECTROSCOPIC PARAMETERS.
Lua i Stíl Chicago (17ú heag.)Davies, R., D. Burstein, A. Dressler, S. Faber, D. Lyndenbell, R. Terlevich, agus G. Wegner. SPECTROSCOPY AND PHOTOMETRY OF ELLIPTIC GALAXIES .2. THE SPECTROSCOPIC PARAMETERS. 1987.
Lua MLA (9ú heag.)Davies, R., et al. SPECTROSCOPY AND PHOTOMETRY OF ELLIPTIC GALAXIES .2. THE SPECTROSCOPIC PARAMETERS. 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.