APA (7th ed.) Citation

Gallagher, J. S., & Grebel, E. K. (2001). Extragalactic star clusters: Speculations on the future. Arxiv.

Chicago Style (17th ed.) Citation

Gallagher, John S., and Eva K. Grebel. "Extragalactic Star Clusters: Speculations on the Future." Arxiv 2001.

MLA (9th ed.) Citation

Gallagher, John S., and Eva K. Grebel. "Extragalactic Star Clusters: Speculations on the Future." Arxiv, 2001.