Bignell, V., & Fortune, J. (1984). Understanding systems failures. Manchester University Press in association with Open University.
Chicago-viite (17. p.)Bignell, Victor, ja Joyce Fortune. Understanding Systems Failures. Manchester Dover, N.H: Manchester University Press in association with Open University, 1984.
MLA-viite (9. p.)Bignell, Victor, ja Joyce Fortune. Understanding Systems Failures. Manchester University Press in association with Open University, 1984.
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