MOTTEL, W. J. (1995). Industrial Safety Is Good Business The Du Pont Story William J. Mottel, Joseph F.long, David E. Morrison. Van Nostrand.
Chicago-viite (17. p.)MOTTEL, William J. Industrial Safety Is Good Business The Du Pont Story William J. Mottel, Joseph F.long, David E. Morrison. Van Nostrand, 1995.
MLA-viite (8. p.)MOTTEL, William J. Industrial Safety Is Good Business The Du Pont Story William J. Mottel, Joseph F.long, David E. Morrison. Van Nostrand, 1995.
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