Strong, W. S. (1981). The copyright book: A practical guide. MIT Press.
Cita Chicago (17th ed.)Strong, William S. The Copyright Book: A Practical Guide. Cambridge, Mass: MIT Press, 1981.
Cita MLA (9th ed.)Strong, William S. The Copyright Book: A Practical Guide. MIT Press, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.