APA (7th ed.) Citation

Kovtyukh, V., & Lemasle, B. (2018). Type II Cepheids: Evidence for Na-O anticorrelation for BL Her type stars? Monthly notices of the Royal Astronomical Society, 477(2), . https://doi.org/10.1093/mnras/sty671

Chicago Style (17th ed.) Citation

Kovtyukh, Valery, and Bertrand Lemasle. "Type II Cepheids: Evidence for Na-O Anticorrelation for BL Her Type Stars?" Monthly Notices of the Royal Astronomical Society 477, no. 2 (2018). https://doi.org/10.1093/mnras/sty671.

MLA (9th ed.) Citation

Kovtyukh, Valery, and Bertrand Lemasle. "Type II Cepheids: Evidence for Na-O Anticorrelation for BL Her Type Stars?" Monthly Notices of the Royal Astronomical Society, vol. 477, no. 2, 2018, https://doi.org/10.1093/mnras/sty671.