^ Chen, X.; Shen, Z. Q.; Xu, Y. (2007). “Measuring the Distance of VX Sagittarii with SiO Maser Proper Motions”. Chinese Journal of Astronomy and Astrophysics
Lockwood, G.W.; Wing, R. F. (1982). “The light and spectrum variations of VX Sagittarii, an extremely cool supergiant”. Monthly Notices of the Royal Astronomical
Clayton, from SAO/NASA Astrophysics Data System (ADS) Variable Star of the Month, January, 2000: R Coronae Borealis, at the AAVSO website RY Sagittarii