APA (7th ed.) Citation

Hummel, W., Szeifert, T., Seifert, W., & Appenzeller, I. (1999). A spectroscopic study of be stars in the SMC cluster NGC 330. Astronomy & astrophysics, 352, .

Chicago Style (17th ed.) Citation

Hummel, Wolfgang, Thomas Szeifert, Walter Seifert, and Immo Appenzeller. "A Spectroscopic Study of Be Stars in the SMC Cluster NGC 330." Astronomy & Astrophysics 352 (1999).

MLA (9th ed.) Citation

Hummel, Wolfgang, et al. "A Spectroscopic Study of Be Stars in the SMC Cluster NGC 330." Astronomy & Astrophysics, vol. 352, 1999.