ebrary, Inc, Featherston, S., & Sternefeld, W. (2007). Roots: Linguistics in search of its evidential base. Mouton de Gruyter.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, Sam Featherston, agus Wolfgang Sternefeld. Roots: Linguistics in Search of Its Evidential Base. Berlin ; New York: Mouton de Gruyter, 2007.
Lua MLA (9ú heag.)ebrary, Inc, et al. Roots: Linguistics in Search of Its Evidential Base. Mouton de Gruyter, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.