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 and 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 and Astrophysics 352 (1999).

MLA (9th ed.) Citation

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