found: Document de projet, between 1989 and 1992:cover (Projet VANNA, Anjouan, Comores)
found: BGN, 7/31/96(Anjouan [Comoros]; ADM1; 12°15ʹS 44°25ʹE)
found: Statesman's yrbk., 1994/95(Nzwani (Anjouan))
found: NUCMC data from New Bedford Whaling Museum, Kendall Institute for Harbinger (Ship). 1845 Jan. 2-1847 Oct. 1(Johanna Island, Comoros; Anjouan, Comoros)
found: GeoNet Names Server, Feb. 2, 2005(Anjouan; island; Comoros; variant: Johanna Island)
found: Djinns & sultans, 2013:page 4 of cover (Hassan II de Ndzuani, one of the greatest sultans of the archipelago of the Comores; the history of Ndzuani; the sultanate of Anjouan)
found: Ramsar website, Comoros names mountain lakes to the Ramsar list, 24 Nov. 2006, viewed June 24, 2021(Ile de Ndzuani (Anjouan))