APA (7th ed.) Citation

Richtler, T., & Grebel, E. K. (2002). Spectroscopy of globular clusters in NGC 1399: A progress report. Extragalactic star clusters.

Chicago Style (17th ed.) Citation

Richtler, Tom, and Eva K. Grebel. "Spectroscopy of Globular Clusters in NGC 1399: A Progress Report." Extragalactic Star Clusters 2002.

MLA (9th ed.) Citation

Richtler, Tom, and Eva K. Grebel. "Spectroscopy of Globular Clusters in NGC 1399: A Progress Report." Extragalactic Star Clusters, 2002.

Warning: These citations may not always be 100% accurate.