Venn AA, Loram JE, Douglas AE: Photosynthetic symbioses in animals. Journal of Experimental Botany, 2008, 59. vsk, nro 5, s. 1069–1080. PubMed:18267943doi:10.1093/jxb/erm328(englanniksi)
Reyes-Prieto A, Weber AP, Bhattacharya D: The origin and establishment of the plastid in algae and plants. Annual Review of Genetics, 2007, 41. vsk, s. 147–168. PubMed:17600460doi:10.1146/annurev.genet.41.110306.130134(englanniksi)
Venn AA, Loram JE, Douglas AE: Photosynthetic symbioses in animals. Journal of Experimental Botany, 2008, 59. vsk, nro 5, s. 1069–1080. PubMed:18267943doi:10.1093/jxb/erm328(englanniksi)
Reyes-Prieto A, Weber AP, Bhattacharya D: The origin and establishment of the plastid in algae and plants. Annual Review of Genetics, 2007, 41. vsk, s. 147–168. PubMed:17600460doi:10.1146/annurev.genet.41.110306.130134(englanniksi)
Tomitani A, Knoll AH, Cavanaugh CM, Ohno T: The evolutionary diversification of cyanobacteria: molecular-phylogenetic and paleontological perspectives. Proceedings of the National Academy of Sciences of the United States of America, huhtikuu 2006, 103. vsk, nro 14, s. 5442–7. Artikkelin verkkoversio. (englanniksi)