Jordan, S., & Becken, W. (1998). Evidence for helium in the magnetic white dwarf GD 229. Astronomy and astrophysics, 336, .
Chicago Style (17th ed.) CitationJordan, Stefan, and Wolfgang Becken. "Evidence for Helium in the Magnetic White Dwarf GD 229." Astronomy and Astrophysics 336 (1998).
MLA (9th ed.) CitationJordan, Stefan, and Wolfgang Becken. "Evidence for Helium in the Magnetic White Dwarf GD 229." Astronomy and Astrophysics, vol. 336, 1998.
Warning: These citations may not always be 100% accurate.