Grzimek, Bernhard (2003). Grzimek's Animal Life Encyclopedia (на језику: енглески). 1. Gale. стр. 16—17. ISBN978-0-7876-5362-0. „During sexual reproduction, each parent animal must form specialized cells known as gametes...In virtually all animals that reproduce sexually, the gametes occur in two morphologically distinct forms corresponding to male and female. These distinctions in form and structure are related to the specific functions of each gamete. The differences become apparent during the latter stages of spermatogenesis (for male gametes) and oogenesis (for female gametes)....After oogenetic meiosis, the morphological transformation of the female gamete generally includes development of a large oocyte that does not move around....The ambiguous term "egg" is often applied to oocytes and other fertilizable stages of female gametes....Spermatogenesis and oogenesis most often occur in different individual animals known as males and females respectively.”
Martin, Elizabeth; Hine, Robert (2015). A Dictionary of Biology (на језику: енглески). Oxford University Press. стр. 222. ISBN978-0-19-871437-8. „Female 1. Denoting the gamete (sex cell) that, during sexual reproduction, fuses with a male gamete in the process of fertilization. Female gametes are generally larger than the male gametes and are usually immotile (see Oosphere; Ovum). 2. (Denoting) an individual organism whose reproductive organs produce only female gametes.”
britannica.com
„Sex”. Encyclopedia Britannica (на језику: енглески). Приступљено 2020-08-20.
„Hermaphroditism”. Encyclopedia Britannica (на језику: енглески). Приступљено 2021-02-20.
doi.org
Kumar R, Meena M, Swapnil P (2019). „Anisogamy”. Ур.: Vonk J, Shackelford T. Encyclopedia of Animal Cognition and Behavior. Cham: Springer International Publishing. стр. 1—5. ISBN978-3-319-47829-6. doi:10.1007/978-3-319-47829-6_340-1. Архивирано из оригинала 01. 11. 2020. г. Приступљено 24. 06. 2021. „Anisogamy can be defined as a mode of sexual reproduction in which fusing gametes, formed by participating parents, are dissimilar in size.”CS1 одржавање: Неподобан URL (веза)
„Sexual dimorphism”. Biology LibreTexts (на језику: енглески). 2016-06-04. Приступљено 2020-07-22.
Klymkowsky, Michael W.; Melanie M. Cooper (4. 6. 2016). „Sexual dimorphism”. Biology LibreTexts (на језику: енглески). LibreTexts. Приступљено 2020-07-22.
Kumar R, Meena M, Swapnil P (2019). „Anisogamy”. Ур.: Vonk J, Shackelford T. Encyclopedia of Animal Cognition and Behavior. Cham: Springer International Publishing. стр. 1—5. ISBN978-3-319-47829-6. doi:10.1007/978-3-319-47829-6_340-1. Архивирано из оригинала 01. 11. 2020. г. Приступљено 24. 06. 2021. „Anisogamy can be defined as a mode of sexual reproduction in which fusing gametes, formed by participating parents, are dissimilar in size.”CS1 одржавање: Неподобан URL (веза)
