Maíz-Apellániz, J.; Pérez, E.; Mas-Hesse, J. M. (2004). “NGC 604, the Scaled OB Association (SOBA) Prototype. I. Spatial Distribution of the Different Gas Phases and Attenuation by Dust”. The Astronomical Journal128 (3): 1196–1218. arXiv:astro-ph/0406130. Bibcode:2004AJ....128.1196M. doi:10.1086/422925. CS1 관리 - 여러 이름 (링크)
Maíz-Apellániz, J.; Pérez, E.; Mas-Hesse, J. M. (2004). “NGC 604, the Scaled OB Association (SOBA) Prototype. I. Spatial Distribution of the Different Gas Phases and Attenuation by Dust”. The Astronomical Journal128 (3): 1196–1218. arXiv:astro-ph/0406130. Bibcode:2004AJ....128.1196M. doi:10.1086/422925. CS1 관리 - 여러 이름 (링크)
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Barba, Rodolfo (2004). “An in-depth analysis of a prototypical giant H II region: NGC 604”. HST Proposal ID #10419. Bibcode:2004hst..prop.6732B.
Maíz-Apellániz, J.; Pérez, E.; Mas-Hesse, J. M. (2004). “NGC 604, the Scaled OB Association (SOBA) Prototype. I. Spatial Distribution of the Different Gas Phases and Attenuation by Dust”. The Astronomical Journal128 (3): 1196–1218. arXiv:astro-ph/0406130. Bibcode:2004AJ....128.1196M. doi:10.1086/422925. CS1 관리 - 여러 이름 (링크)
