(1969). Guide to PL/1 / prepared under Contract F19628-67-C-0396 by Logicon Incorporated.
Chicago-viite (17. p.)Guide to PL/1 / Prepared Under Contract F19628-67-C-0396 by Logicon Incorporated. 1969.
MLA-viite (9. p.)Guide to PL/1 / Prepared Under Contract F19628-67-C-0396 by Logicon Incorporated. 1969.
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