Conway, Richard
An Introduction to programming: a structured approach using PL/I and PL/C
Winthrop Publishers, 1973
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Katzan, Harry, Jr.
A PL/I approach to programming languages
Auerbach, 1972
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Lecht, Charles Philip
The Programmer's PL/I: a complete reference
McGraw-Hill, 1968
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Edwards, Leonard E.
PL/I for business applications
Reston Publishing, 1973
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Hume, J.N.P.
Structured programming using PL/1 and SP/K
Prentice-Hall, 1975
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