"Sex for babies offer: Women desperate to get pregnant offering to sleep with sperm donors". Mirror. 1 May 2013. Retrieved 4 December 2015.
"What is natural insemination?". Retrieved 4 December 2015. Natural insemination has not been recognised in any state as a legal contract, and is still viewed as a natural procreation process where the sperm donor, or the biological father in this case, is still liable for care and support of the child. That means that unlike artificial insemination, a woman pregnant through natural insemination has a legal right to claim child support from the donor and the donor has a legal right to the custody of the child.
Walshe, M. O'C. "Buddhism and Sex". Access to Insight. Retrieved 4 December 2015.
"Infertility and Artificial Insemination". Retrieved 4 December 2015.
Berkley, Sean (12 November 2011). "6 Terrifying Things Nobody Tells You About Donating Sperm". Retrieved 4 December 2015.
Uffalussy, Jennifer Gerson (6 February 2014). "The Cost of IVF: 4 Things I Learned While Battling Infertility". Forbes. Retrieved 4 December 2015.
"Benefits of artificial insemination in livestock". Animal Smart. American Society of Animal Science. Retrieved 4 December 2015.
Прамежкавае (вонкава-ўнутранае). Пры ім самец выдаляе сперму (у выглядзе кропляў семявой вадкасці або сперматафораў) у знешняе асяроддзе, на субстрат, дзе яе захоплівае саміца. Сустракаецца ў многіх ніжэйшых членістаногіх, што жывуць у вадзе, і хвастатых земнаводных.
