Wall, R. A. (2000). Copyright made easier (3rd ed.). Aslib.
Cita Chicago (17th ed.)Wall, Raymond A. Copyright Made Easier. 3rd ed. London: Aslib, 2000.
Cita MLA (9th ed.)Wall, Raymond A. Copyright Made Easier. 3rd ed. Aslib, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.