APA引文

Hughes, J. K. (1979). PL-I structured programming. John Wiley.

Chicago Edition Citation

Hughes, Joan Kirkby. PL-I Structured Programming. New York: John Wiley, 1979.

MLA引文

Hughes, Joan Kirkby. PL-I Structured Programming. John Wiley, 1979.

警告：這些引文格式不一定是100％准確.