Wright, H. B. (1975). Executive ease and dis-ease.
Cita Chicago (17th ed.)Wright, Henry Beric. Executive Ease and Dis-ease. Epping, 1975.
Cita MLA (9th ed.)Wright, Henry Beric. Executive Ease and Dis-ease. 1975.
Atenció: Aquestes cites poden no estar 100% correctes.