APA (7th ed.) Citation

MERRILL, P. W., & Burwell, C. G. (1950). Additional stars whose spectra have a bright Halpha line. Astrophysical Journal, 112, 72.

Chicago Style (17th ed.) Citation

MERRILL, Paul Willard, and C. G. Burwell. "Additional Stars Whose Spectra Have a Bright Halpha Line." Astrophysical Journal 112 (1950): 72.

MLA (9th ed.) Citation

MERRILL, Paul Willard, and C. G. Burwell. "Additional Stars Whose Spectra Have a Bright Halpha Line." Astrophysical Journal, vol. 112, 1950, p. 72.