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Bridge, Eli S.; Jones, Andrew W.; Baker, Allan J. (2005). "A phylogenetic framework for the terns (Sternini) inferred from mtDNA sequences: implications for taxonomy and plumage evolution". Molecular Phylogenetics and Evolution. 35 (2): 459–469. doi:10.1016/j.ympev.2004.12.010. PMID15804415.
Yorioa, Pablo; Amorim Efe, Márcio (2007). "Population status of royal and cayenne terns breeding in Argentina and Brazil". Waterbirds. 34 (3): 561. doi:10.1675/1524-4695-31.4.561. S2CID130697581.
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