(en) Kenneth H Hinkle, Francis C Fekel et Richard R Joyce, « Infrared Spectroscopy of Symbiotic Stars. Vii. Binary Orbit and Long Secondary Period Variability of Ch Cygni », The Astrophysical Journal, vol. 692, no 2, , p. 1360 (DOI10.1088/0004-637X/692/2/1360, Bibcode2009ApJ...692.1360H, arXiv0811.0631)
(en) Kenneth H Hinkle, Francis C Fekel et Richard R Joyce, « Infrared Spectroscopy of Symbiotic Stars. Vii. Binary Orbit and Long Secondary Period Variability of Ch Cygni », The Astrophysical Journal, vol. 692, no 2, , p. 1360 (DOI10.1088/0004-637X/692/2/1360, Bibcode2009ApJ...692.1360H, arXiv0811.0631)
(en) Kenneth H. Hinkle, Francis C. Fekel, Diana S. Johnson et Werner W. G. Scharlach, « The triple symbiotic system CH Cygni », The Astronomical Journal, vol. 105, , p. 1074 (DOI10.1086/116494, Bibcode1993AJ....105.1074H)
(en) Kenneth H Hinkle, Francis C Fekel et Richard R Joyce, « Infrared Spectroscopy of Symbiotic Stars. Vii. Binary Orbit and Long Secondary Period Variability of Ch Cygni », The Astrophysical Journal, vol. 692, no 2, , p. 1360 (DOI10.1088/0004-637X/692/2/1360, Bibcode2009ApJ...692.1360H, arXiv0811.0631)
(en) M. Mikołajewski, J. Mikołajewska et T.N. Khudiakova, « A long-period symbiotic binary CH Cygni. I - A hundred years' history of variability », Astronomy and Astrophysics, vol. 235, nos 1-2, , p. 219-233 (ISSN0004-6361, Bibcode1990A&A...235..219M)
(en) Kenneth H. Hinkle, Francis C. Fekel, Diana S. Johnson et Werner W. G. Scharlach, « The triple symbiotic system CH Cygni », The Astronomical Journal, vol. 105, , p. 1074 (DOI10.1086/116494, Bibcode1993AJ....105.1074H)
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(en) M. Mikołajewski, J. Mikołajewska et T.N. Khudiakova, « A long-period symbiotic binary CH Cygni. I - A hundred years' history of variability », Astronomy and Astrophysics, vol. 235, nos 1-2, , p. 219-233 (ISSN0004-6361, Bibcode1990A&A...235..219M)