GILBREATH ROBERT D. (1987). FORWARD THINKING: THE PRAGMATISTS GUIDE TO TODAY`S BUSINESS TRENDS. MCGRAW-HILL.
Cita Chicago (17th ed.)GILBREATH ROBERT D. FORWARD THINKING: THE PRAGMATISTS GUIDE TO TODAY`S BUSINESS TRENDS. LONDON: MCGRAW-HILL, 1987.
Cita MLA (9th ed.)GILBREATH ROBERT D. FORWARD THINKING: THE PRAGMATISTS GUIDE TO TODAY`S BUSINESS TRENDS. MCGRAW-HILL, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.