Cita APA (7th ed.)
Singleton, S. (2004). E-mail: Legal issues (Updated and repr.). Thorogood.
Cita Chicago (17th ed.)
Singleton, Susan. E-mail: Legal Issues. Updated and repr. London: Thorogood, 2004.
Cita MLA (9th ed.)
Singleton, Susan. E-mail: Legal Issues. Updated and repr. Thorogood, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.