Lua APA (7ú heag.)
ebrary, Inc, & Alonso, D. J. (2011). English as a second language. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus David J. Alonso. English as a Second Language. New York: Nova Science Publishers, 2011.
Lua MLA (9ú heag.)
ebrary, Inc, agus David J. Alonso. English as a Second Language. Nova Science Publishers, 2011.
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