APA (7th ed.) Citation

Leitherer, C., Krautter, J., Mandel, H., Stahl, O., & Wolf, B. (1987). Photometry and spectroscopy of the O-type variable HD 167971. Astronomy & astrophysics, 185(1/2), .

Chicago Style (17th ed.) Citation

Leitherer, Claus, Joachim Krautter, Holger Mandel, Otmar Stahl, and Bernhard Wolf. "Photometry and Spectroscopy of the O-type Variable HD 167971." Astronomy & Astrophysics 185, no. 1/2 (1987).

MLA (9th ed.) Citation

Leitherer, Claus, et al. "Photometry and Spectroscopy of the O-type Variable HD 167971." Astronomy & Astrophysics, vol. 185, no. 1/2, 1987.