FOSTER, T.; BRUNT, C. M. A CGPS Look at the Spiral Structure of the Outer Milky Way. I. Distances and Velocities to Star-forming Regions. S. 147. Astronomical Journal [online]. Listopad 2015 [cit. 2019-11-26]. Roč. 150, čís. 5, s. 147. Dostupné online. doi:10.1088/0004-6256/150/5/147. Bibcode2015AJ....150..147F. (anglicky)
FOSTER, T.; BRUNT, C. M. A CGPS Look at the Spiral Structure of the Outer Milky Way. I. Distances and Velocities to Star-forming Regions. S. 147. Astronomical Journal [online]. Listopad 2015 [cit. 2019-11-26]. Roč. 150, čís. 5, s. 147. Dostupné online. doi:10.1088/0004-6256/150/5/147. Bibcode2015AJ....150..147F. (anglicky)
SHARPLESS, Stewart. A Catalogue of H II Regions. S. 257. Astrophysical Journal Supplement [online]. Prosinec 1959 [cit. 2019-11-26]. Roč. 4, s. 257. Dostupné online. Bibcode1959ApJS....4..257S. (anglicky)
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FOSTER, T.; BRUNT, C. M. A CGPS Look at the Spiral Structure of the Outer Milky Way. I. Distances and Velocities to Star-forming Regions. S. 147. Astronomical Journal [online]. Listopad 2015 [cit. 2019-11-26]. Roč. 150, čís. 5, s. 147. Dostupné online. doi:10.1088/0004-6256/150/5/147. Bibcode2015AJ....150..147F. (anglicky)
SHARPLESS, Stewart. A Catalogue of H II Regions. S. 257. Astrophysical Journal Supplement [online]. Prosinec 1959 [cit. 2019-11-26]. Roč. 4, s. 257. Dostupné online. Bibcode1959ApJS....4..257S. (anglicky)