History of Japanese SignLanguage 手話の歴史. Japanese SignLanguage & アメリカ手話. [2020-10-10]. (原始内容存档于2022-01-10) (美国英语). KoreanSignLanguage - Owlcation - Education
Coppola, M. Creation through Contact: Signlanguage emergence and signlanguage change in Nicaragua.. Language Creation and Change: Creolization, Diachrony