Systematic programming : an introduction
Niklaus Wirth.
Englewood Cliffs, N.J. : Prentice-Hall, ©1973.
xiv, 169 págs. : ilustraciones ; 24 cm.
Serie: Prentice-Hall series in automatic computation
ISBN: 0138803692
Incluye en un apéndice: "The programming language PASCAL ... revised version of definition in Acta Informatica, 1, 35-63, (1971)."