(en-GB) « Jamaica and Mexico Issue Commemorative Stamps - Jamaica Information Service », Jamaica Information Service, (lire en ligne, consulté le )
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Davis, A.K., and M. Holden. 2015. Measuring intraspecific variation in flight-related morphology of monarch butterflies (Danaus plexippus): which sex has the best flying gear? Journal of Insects Article ID 591705, 6 pages. https://www.hindawi.com/archive/2015/591705/