APA (7th ed.) Citation

Bonifacio, P., & Caffau, E. (2012). An upper limit on the sulphur abundance in HE 1327-2326. Astronomy and astrophysics, 544(8), .

Chicago Style (17th ed.) Citation

Bonifacio, Piercarlo, and Elisabetta Caffau. "An Upper Limit on the Sulphur Abundance in HE 1327-2326." Astronomy and Astrophysics 544, no. 8 (2012).

MLA (9th ed.) Citation

Bonifacio, Piercarlo, and Elisabetta Caffau. "An Upper Limit on the Sulphur Abundance in HE 1327-2326." Astronomy and Astrophysics, vol. 544, no. 8, 2012.

Warning: These citations may not always be 100% accurate.