Paunzen, E.; et al, CCD photometric search for peculiar stars in open clusters. VII. Berkeley 11, Berkeley 94, Haffner 15, Lyngå 1, NGC 6031, NGC 6405, NGC 6834 and Ruprecht 130, Astronomy and Astrophysics, July 2006, 454 (1): 171–178, Bibcode:2006A&A...454..171P, arXiv:astro-ph/0602567, doi:10.1051/0004-6361:20054628.
Paunzen, E.; et al, CCD photometric search for peculiar stars in open clusters. VII. Berkeley 11, Berkeley 94, Haffner 15, Lyngå 1, NGC 6031, NGC 6405, NGC 6834 and Ruprecht 130, Astronomy and Astrophysics, July 2006, 454 (1): 171–178, Bibcode:2006A&A...454..171P, arXiv:astro-ph/0602567, doi:10.1051/0004-6361:20054628.
Paunzen, E.; et al, CCD photometric search for peculiar stars in open clusters. VII. Berkeley 11, Berkeley 94, Haffner 15, Lyngå 1, NGC 6031, NGC 6405, NGC 6834 and Ruprecht 130, Astronomy and Astrophysics, July 2006, 454 (1): 171–178, Bibcode:2006A&A...454..171P, arXiv:astro-ph/0602567, doi:10.1051/0004-6361:20054628.
Frommert, Hartmut; Kronberg, Christine, Messier 6, SEDS Messier pages (Students for the Exploration and Development of Space (SEDS)), August 21, 2007 [2018-12-07], (原始内容存档于2018-09-19).
Frommert, Hartmut; Kronberg, Christine, Messier 6, SEDS Messier pages (Students for the Exploration and Development of Space (SEDS)), August 21, 2007 [2018-12-07], (原始内容存档于2018-09-19).