TY  - BOOK
AU  - Gottfried,Byron S.
TI  - PL/I: programmer's reference guide 
T2  - QPI reference guides in computer languages
AV  - QA76.73.P25 G68
PY  - 1973///
CY  - New York
PB  - Quantum
KW  - PL/I (Computer program language)
UR  - http://www.archive.org/details/pliprogrammersre00gott
UR  - http://www.openlibrary.org/books/OL24216875M
ER  -