Lua APA (7ú heag.)
ebrary, Inc, Tieken-Boon van Ostade, I., Tottie, G., & Wurff, W. v. d. (1999). Negation in the history of English. Mouton de Gruyter.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, Ingrid Tieken-Boon van Ostade, Gunnel Tottie, agus Wim van der Wurff. Negation in the History of English. Berlin ; New York: Mouton de Gruyter, 1999.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Negation in the History of English. Mouton de Gruyter, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.