APA (7th ed.) Citation

Spite, M., Caffau, E., & Ludwig, H. (2011). First stars: XIV. Sulfur abundances in extremely metal-poor stars. Astronomy and astrophysics, 528, .

Chicago Style (17th ed.) Citation

Spite, Monique, Elisabetta Caffau, and Hans-Günter Ludwig. "First Stars: XIV. Sulfur Abundances in Extremely Metal-poor Stars." Astronomy and Astrophysics 528 (2011).

MLA (9th ed.) Citation

Spite, Monique, et al. "First Stars: XIV. Sulfur Abundances in Extremely Metal-poor Stars." Astronomy and Astrophysics, vol. 528, 2011.