APA (7th ed.) Citation

Caffau, E., Sbordone, L., & Ludwig, H. (2011). An extremely primitive star in the galactic halo. Nature, 477(7362), .

Chicago Style (17th ed.) Citation

Caffau, Elisabetta, Luca Sbordone, and Hans-Günter Ludwig. "An Extremely Primitive Star in the Galactic Halo." Nature 477, no. 7362 (2011).

MLA (9th ed.) Citation

Caffau, Elisabetta, et al. "An Extremely Primitive Star in the Galactic Halo." Nature, vol. 477, no. 7362, 2011.