Athey, T. H. (1982). Systematic systems approach: An integrated method for solving systems problems. Prentice-Hall.
Chicago-referens (17:e uppl.)Athey, Thomas H. Systematic Systems Approach: An Integrated Method for Solving Systems Problems. Englewood Cliffs, N.J: Prentice-Hall, 1982.
MLA-referens (9:e uppl.)Athey, Thomas H. Systematic Systems Approach: An Integrated Method for Solving Systems Problems. Prentice-Hall, 1982.
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