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Wallerstein, George (2002). “The Cepheids of Population II and Related Stars”. The Publications of the Astronomical Society of the Pacific114 (797): 689. Bibcode:2002PASP..114..689W. doi:10.1086/341698.
Soszyński, I.; Udalski, A.; Szymański, M. K.; Kubiak, M.; Pietrzyński, G.; Wyrzykowski, Ł.; Szewczyk, O.; Ulaczyk, K.; Poleski, R. (2008). “The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. II.Type II Cepheids and Anomalous Cepheids in the Large Magellanic Cloud”. Acta Astronomica58: 293. arXiv:0811.3636. Bibcode:2008AcA....58..293S.
“General Catalogue of Variable Stars”. 《GCVS》. Institute of Astronomy of Russian Academy of Sciences and Sternberg State Astronomical Institute. 2013년 5월 31일에 확인함.