APA (7th ed.) Citation

Caffau, E., Ludwig, H., & Sbordone, L. (2012). A primordial star in the heart of the lion. Astronomy and astrophysics, 542(6), .

Chicago Style (17th ed.) Citation

Caffau, Elisabetta, Hans-Günter Ludwig, and Luca Sbordone. "A Primordial Star in the Heart of the Lion." Astronomy and Astrophysics 542, no. 6 (2012).

MLA (9th ed.) Citation

Caffau, Elisabetta, et al. "A Primordial Star in the Heart of the Lion." Astronomy and Astrophysics, vol. 542, no. 6, 2012.