APA (7th ed.) Citation

Christlieb, N., Wisotzki, L., & Graßhoff, G. (2002). Statistical methods of automatic spectral classification and their application to the Hamburg/ESO Survey. Astronomy & astrophysics, 391(1), .

Chicago Style (17th ed.) Citation

Christlieb, Norbert, Lutz Wisotzki, and Gerd Graßhoff. "Statistical Methods of Automatic Spectral Classification and Their Application to the Hamburg/ESO Survey." Astronomy & Astrophysics 391, no. 1 (2002).

MLA (9th ed.) Citation

Christlieb, Norbert, et al. "Statistical Methods of Automatic Spectral Classification and Their Application to the Hamburg/ESO Survey." Astronomy & Astrophysics, vol. 391, no. 1, 2002.