Smith, N. (2007). “Discovery of a Nearby Twin of SN 1987A's Nebula around the Luminous Blue Variable HD 168625: Was Sk -69 202 an LBV?”. 《The Astronomical Journal》 133 (3): 1034–1538. arXiv:astro-ph/0611544. Bibcode:2007AJ....133.1034S. doi:10.1086/510838.
Smith, N. (2007). “Discovery of a Nearby Twin of SN 1987A's Nebula around the Luminous Blue Variable HD 168625: Was Sk -69 202 an LBV?”. 《The Astronomical Journal》 133 (3): 1034–1538. arXiv:astro-ph/0611544. Bibcode:2007AJ....133.1034S. doi:10.1086/510838.
Podsiadlowski, P. (1992). “The progenitor of SN 1987 A”. 《Publications of the Astronomical Society of the Pacific》 104: 717. Bibcode:1992PASP..104..717P. doi:10.1086/133043.
Sanduleak, N. (1970). “A deep objective-prism survey for Large Magellanic Cloud members”. 《Contribution》 89. Bibcode:1970CoTol..89.....S.
Smith, N. (2007). “Discovery of a Nearby Twin of SN 1987A's Nebula around the Luminous Blue Variable HD 168625: Was Sk -69 202 an LBV?”. 《The Astronomical Journal》 133 (3): 1034–1538. arXiv:astro-ph/0611544. Bibcode:2007AJ....133.1034S. doi:10.1086/510838.
Podsiadlowski, P. (1992). “The progenitor of SN 1987 A”. 《Publications of the Astronomical Society of the Pacific》 104: 717. Bibcode:1992PASP..104..717P. doi:10.1086/133043.