APA (7th ed.) Citation

Harbeck, D., Smith, G. H., & Grebel, E. K. (2002). External enrichment processes in 47 Tuc? Bulletin of the American Astronomical Society, 34, .

Chicago Style (17th ed.) Citation

Harbeck, Daniel-Rolf, Graeme H. Smith, and Eva K. Grebel. "External Enrichment Processes in 47 Tuc?" Bulletin of the American Astronomical Society 34 (2002).

MLA (9th ed.) Citation

Harbeck, Daniel-Rolf, et al. "External Enrichment Processes in 47 Tuc?" Bulletin of the American Astronomical Society, vol. 34, 2002.