Anger, Arthur L.
Computer science : the PL/I language
John Wiley & Sons, 1972
 Buku Teks SO
Osborne, Adam
OSBORNE 16-Bit Microprocessor Handbook
Osborne McGraw-Hill, 1981
 Buku Teks SO
Sterling, T.D.
Computing and computer science : a first course with PL/I
Macmillan, 1970
 Buku Teks SO
Tausworthe, Robert C.
Standardized development of computer software part I : methods
Prentice-Hall, 1977
 Buku Teks SO
Puotinen, C.J.
Using the IBM personal computer: wordstar
Holt, Rinehart and Winston, 1983
 Buku Teks SO