Singleton, S. (2008). Email legal issues 2008 ([Rev. ed.].). Thorogood.
Chicago Style (17th ed.) ZitazioaSingleton, Susan. Email Legal Issues 2008. [Rev. ed.]. London: Thorogood, 2008.
MLA (9th ed.) ZitazioaSingleton, Susan. Email Legal Issues 2008. [Rev. ed.]. Thorogood, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.