MERRILL, P. W., & Burwell, C. G. (1949). Second supplement to the Mount Wilson catalogue and bibliography of stars of classes B and A whose spectra have bright hydrogen lines. Astrophysical Journal, 110, 387.
Chicago Style (17th ed.) CitationMERRILL, Paul Willard, and C. G. Burwell. "Second Supplement to the Mount Wilson Catalogue and Bibliography of Stars of Classes B and A Whose Spectra Have Bright Hydrogen Lines." Astrophysical Journal 110 (1949): 387.
MLA (9th ed.) CitationMERRILL, Paul Willard, and C. G. Burwell. "Second Supplement to the Mount Wilson Catalogue and Bibliography of Stars of Classes B and A Whose Spectra Have Bright Hydrogen Lines." Astrophysical Journal, vol. 110, 1949, p. 387.
Warning: These citations may not always be 100% accurate.
