Thomas Elwyn. (1994). Manager's Casebook. Penguin Books.
Cita Chicago (17th ed.)Thomas Elwyn. Manager's Casebook. London: Penguin Books, 1994.
Cita MLA (9th ed.)Thomas Elwyn. Manager's Casebook. Penguin Books, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.