Marsh, D., & Hodsdon, A. (2008). The guardian book of english language. Guardian Creative.
Lua i Stíl Chicago (17ú heag.)Marsh, David, agus Amelia Hodsdon. The Guardian Book of English Language. UK: Guardian Creative, 2008.
Lua MLA (9ú heag.)Marsh, David, agus Amelia Hodsdon. The Guardian Book of English Language. Guardian Creative, 2008.
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