Bernstein, P. L. (2012). The Power of Gold. McGraw - Hill.
Cita Chicago (17th ed.)Bernstein, Peter L. The Power of Gold. New York: McGraw - Hill, 2012.
Cita MLA (9th ed.)Bernstein, Peter L. The Power of Gold. McGraw - Hill, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.