LEON, A. (1999). FUNDAMENTALS OF INFORMATION TECHNOLOGY. LEON TECH WORLD.
芝加哥风格引文LEON, ALEXIS. FUNDAMENTALS OF INFORMATION TECHNOLOGY. ONG: LEON TECH WORLD, 1999.
MLA引文LEON, ALEXIS. FUNDAMENTALS OF INFORMATION TECHNOLOGY. LEON TECH WORLD, 1999.
警告：这些引文格式不一定是100％准确.