APA (7th ed.) Citation

Bonifacio, P., Ludwig, H., & Caffau, E. (2009). First stars: XII. Abundances in extremely metal-poor turnoff stars, and comparison with the giants. Astronomy and astrophysics, 501(2), . https://doi.org/10.1051/0004-6361/200810610

Chicago Style (17th ed.) Citation

Bonifacio, Piercarlo, Hans-Günter Ludwig, and Elisabetta Caffau. "First Stars: XII. Abundances in Extremely Metal-poor Turnoff Stars, and Comparison with the Giants." Astronomy and Astrophysics 501, no. 2 (2009). https://doi.org/10.1051/0004-6361/200810610.

MLA (9th ed.) Citation

Bonifacio, Piercarlo, et al. "First Stars: XII. Abundances in Extremely Metal-poor Turnoff Stars, and Comparison with the Giants." Astronomy and Astrophysics, vol. 501, no. 2, 2009, https://doi.org/10.1051/0004-6361/200810610.