Hughes, J. K. (1979). PL/I structured programming (2nd ed.). Wiley.
Style de citation Chicago (17e éd.)Hughes, Joan Kirkby. PL/I Structured Programming. 2nd ed. New York: Wiley, 1979.
Style de citation MLA (9e éd.)Hughes, Joan Kirkby. PL/I Structured Programming. 2nd ed. Wiley, 1979.
Attention : ces citations peuvent ne pas être correctes à 100%.