Students for the Exploration and Development of Space (ed.). "SEDS information on NGC2264". Arquivado dende o orixinal o 12-03-2009. Consultado o 27-03-2009.
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Students for the Exploration and Development of Space (ed.). "SEDS information on NGC2264". Arquivado dende o orixinal o 12-03-2009. Consultado o 27-03-2009.