Conway, Richard
An introduction to programming: a structured approach using PL/1 and PL/C-7
Massachusetts Winthrop Publishers, 1975
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Hughes, Joan K.
Structured programming using PL/C
John Wiley & Sons, 1981
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Barnard, David T.
PL/1 programming problems and applications
Reston Publishing Company, Inc., 1982
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Miller, Lawrence H.
Advanced programming: design and structured using pascal
Addison-Wesley, 1986
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Dahl, O.J.
Structured programming
Academic Press, 1972
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