Lua APA (7ú heag.)
Preston, D. R. (1989). Perceptual dialectology: Nonlinguists' views of areal linguistics. Foris Publications.
Lua i Stíl Chicago (17ú heag.)
Preston, Dennis Richard. Perceptual Dialectology: Nonlinguists' Views of Areal Linguistics. Dordrecht, Holland ; Providence, R.I.: Foris Publications, 1989.
Lua MLA (9ú heag.)
Preston, Dennis Richard. Perceptual Dialectology: Nonlinguists' Views of Areal Linguistics. Foris Publications, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.