Lua APA (7ú heag.)
ebrary, Inc, & Sgall, P. (1992). Variation in language: Code switching in Czech as a challenge for sociolinguistics. J. Benjamins Pub. Co..
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Petr Sgall. Variation in Language: Code Switching in Czech as a Challenge for Sociolinguistics. Amsterdam ; Philadelphia: J. Benjamins Pub. Co., 1992.
Lua MLA (9ú heag.)
ebrary, Inc, agus Petr Sgall. Variation in Language: Code Switching in Czech as a Challenge for Sociolinguistics. J. Benjamins Pub. Co., 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.