POPPEL HARVEY L. (1987). INFORMATION TECHNOLOGY: THE TRILLION DOLLAR OPPORTUNITY. MCGRAW-HILL.
芝加哥风格引文POPPEL HARVEY L. INFORMATION TECHNOLOGY: THE TRILLION DOLLAR OPPORTUNITY. NEW YORK: MCGRAW-HILL, 1987.
MLA引文POPPEL HARVEY L. INFORMATION TECHNOLOGY: THE TRILLION DOLLAR OPPORTUNITY. MCGRAW-HILL, 1987.
警告：这些引文格式不一定是100％准确.