M. Streicher, p. 170, 2009. (EN) Magda Streicher, A Spyglass Telescope, in Monthly Notes of the Astronomical Society of South Africa, vol. 68, 7 e 8, agosto 2009, pp. 168-171, Bibcode:2009MNSSA..68..168S.
S. Djorgovski, 1993. (EN) S. Djorgovski, Physical Parameters of Galactic Globular Clusters, in S. G. Djorgovski e G. Meylan (a cura di), Structure and Dynamics of Globular Clusters. Proceedings of a Workshop held in Berkeley, California, July 15-17, 1992, vol. 50, San Francisco, Astronomical Society of the Pacific, gennaio 1993, pp. 373-382, Bibcode:1993ASPC...50..373D, ISBN0937707694.
seds.org
spider.seds.org
NGC 6584, su spider.seds.org. URL consultato il 24 aprile 2020.