Lua APA (7ú heag.)
Singleton, S. (2008). Email legal issues 2008 ([Rev. ed.].). Thorogood.
Lua i Stíl Chicago (17ú heag.)
Singleton, Susan. Email Legal Issues 2008. [Rev. ed.]. London: Thorogood, 2008.
Lua MLA (9ú heag.)
Singleton, Susan. Email Legal Issues 2008. [Rev. ed.]. Thorogood, 2008.
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