Grzimek, B. (1974). Grzimek's Animal Life Encyclopedia: Volume 5 Fishes II & Amphibians. New York: Van Nostrand Reihnhold Co. стр. 301—302. ASINB000HHFY52.
Murray, Patrick R.; Rosenthal, Ken S.; Pfaller, Michael A. (2013). Medical microbiology (7th изд.). St. Louis, Mo.: Mosby. стр. 418. ISBN9780323086929.
„STD's Today”. Архивирано из оригинала 25. 10. 2014. г. Приступљено 07. 05. 2017. National Prevention Network, Center for Disease Control, United States Government, retrieving 2007
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Cantino, Philip D.; Doyle, James A.; Graham, Sean W.; Judd, Walter S.; Olmstead, Richard G.; Soltis, Douglas E.; Soltis, Pamela S.; Donoghue, Michael J. (2007). „Towards a phylogenetic nomenclature of Tracheophyta”. Taxon. 56 (3): E1—E44. JSTOR25065865. doi:10.2307/25065865.
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Rodger, JC; Hughes, RL (1973). „Studies of the accessory glands of male marsupials”. Australian Journal of Zoology. 21 (3): 303. doi:10.1071/ZO9730303. hdl:1959.4/70011.
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Rodger, JC; Hughes, RL (1973). „Studies of the accessory glands of male marsupials”. Australian Journal of Zoology. 21 (3): 303. doi:10.1071/ZO9730303. hdl:1959.4/70011.
Lott, J., Liu, J., Pennell, K., Lesage, A., & West, M. (2002, September). Lott, John N. A.; Liu, Jessica C.; Pennell, Kelly A.; Lesage, Aude; West, M. Marcia (2002). „Iron-rich particles and globoids in embryos of seeds from phyla Coniferophyta, Cycadophyta, Gnetophyta, and Ginkgophyta: characteristics of early seed plants”. Canadian Journal of Botany. 80 (9): 954—961. Bibcode:2002CaJB...80..954L. doi:10.1139/b02-083.. Retrieved July 17, 2009, from Academic Search Premier database.
Cantino, Philip D.; Doyle, James A.; Graham, Sean W.; Judd, Walter S.; Olmstead, Richard G.; Soltis, Douglas E.; Soltis, Pamela S.; Donoghue, Michael J. (2007). „Towards a phylogenetic nomenclature of Tracheophyta”. Taxon. 56 (3): E1—E44. JSTOR25065865. doi:10.2307/25065865.
„STD's Today”. Архивирано из оригинала 25. 10. 2014. г. Приступљено 07. 05. 2017. National Prevention Network, Center for Disease Control, United States Government, retrieving 2007
Rodger, JC; Hughes, RL (1973). „Studies of the accessory glands of male marsupials”. Australian Journal of Zoology. 21 (3): 303. doi:10.1071/ZO9730303. hdl:1959.4/70011.
Grzimek, B. (1974). Grzimek's Animal Life Encyclopedia: Volume 5 Fishes II & Amphibians. New York: Van Nostrand Reihnhold Co. стр. 301—302. ASINB000HHFY52.