Crawford, F. R. (1968). Introduction to data processing. Prentice-Hall.
芝加哥风格引文Crawford, F. Robert. Introduction to Data Processing. Englewood Cliffs, N.J: Prentice-Hall, 1968.
MLA引文Crawford, F. Robert. Introduction to Data Processing. Prentice-Hall, 1968.
警告：这些引文格式不一定是100％准确.