Structured COBOL a step by step approach
Davis, Gordon Bitter.
Litecky, Charles R.(Charles Roger),1941-
Davis, Gordon B.(Gordon Bitter)1930-Elementary structured COBOL.
New York London McGraw-Hill
c1987
New ed., - Previous ed.: published as Elementary structured COBOL / Gordon B. Davis, Margrethe H. Olson, Charles R. Litecky. 1977
Bibliography: p385-386. - Includes index
COBOL (Computer program language)