Welsh, J., & McKeag, M. (1980). Structured system programming. Englewood Cliffs, N.J. : Prentice-Hall.
Cita Chicago Style (17a ed.)Welsh, Jim, y Michael McKeag. Structured System Programming. Englewood Cliffs, N.J. : Prentice-Hall, 1980.
Cita MLA (9a ed.)Welsh, Jim, y Michael McKeag. Structured System Programming. Englewood Cliffs, N.J. : Prentice-Hall, 1980.
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