Blake, R. R. (1989). Executive achievement: Making it at the top. McGraw-Hill.
Cita Chicago (17th ed.)Blake, Robert Rogers. Executive Achievement: Making It at the Top. New York: McGraw-Hill, 1989.
Cita MLA (9th ed.)Blake, Robert Rogers. Executive Achievement: Making It at the Top. McGraw-Hill, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.