APA (7th ed.) Citation

Sbordone, L., Caffau, E., & Ludwig, H. (2009). Sulfur in the globular clusters 47 Tucanae and NGC 6752. Astronomy and astrophysics, 503(1), . https://doi.org/10.1051/0004-6361/200811513

Chicago Style (17th ed.) Citation

Sbordone, Luca, Elisabetta Caffau, and Hans-Günter Ludwig. "Sulfur in the Globular Clusters 47 Tucanae and NGC 6752." Astronomy and Astrophysics 503, no. 1 (2009). https://doi.org/10.1051/0004-6361/200811513.

MLA (9th ed.) Citation

Sbordone, Luca, et al. "Sulfur in the Globular Clusters 47 Tucanae and NGC 6752." Astronomy and Astrophysics, vol. 503, no. 1, 2009, https://doi.org/10.1051/0004-6361/200811513.