Grebel, E. K., & Richtler, T. (1992). Metallicities from CCD Strömgren photometry of the young cluster NGC 330 and nearby field stars in the small magellanic cloud. Astronomy & astrophysics, 253, .
Chicago Style (17th ed.) CitationGrebel, Eva K., and Tom Richtler. "Metallicities from CCD Strömgren Photometry of the Young Cluster NGC 330 and Nearby Field Stars in the Small Magellanic Cloud." Astronomy & Astrophysics 253 (1992).
MLA (9th ed.) CitationGrebel, Eva K., and Tom Richtler. "Metallicities from CCD Strömgren Photometry of the Young Cluster NGC 330 and Nearby Field Stars in the Small Magellanic Cloud." Astronomy & Astrophysics, vol. 253, 1992.
Warning: These citations may not always be 100% accurate.