記事内の引用について
Massachusetts mom, 64, and her 42-year-old son face up to 20 years in prison for incest after his wife 'caught them having sex'(Daily Mailより)
https://www.dailymail.co.uk/news/article-8667317/Mom-64-son-42-face-20-years-incest-wife-caught-having-sex.html
SUSPICIOUS MINDS:Wife who ‘walked in on husband having sex with his MOM’ had always feared they were having ‘incest’ relationship(Sunより)
https://www.thesun.co.uk/news/12541088/incest-mom-son-wife-had-suspicions/
遺伝医学の基礎知識(信州大学医学部付属病院遺伝子診療部ホームページより)
http://www.shinshu-u.ac.jp/hp/bumon/gene/genetopia/basic/basic1.htm
KEEPING IT IN THE FAMILY :Shocking incest map of Europe reveals where sex is LEGAL between consenting siblings(Scottish Sunより)
https://www.thescottishsun.co.uk/news/2223041/shocking-incest-map-of-europe-reveals-where-sex-is-legal-between-consenting-siblings/
Incest(JUSTIAより)
https://www.justia.com/criminal/offenses/other-crimes/incest/
Legality of incest in the United States(Wikipedia USAより)
https://en.wikipedia.org/wiki/Legality_of_incest_in_the_United_States