OBrien, J. J. (1999). Cpm In Construction Management James J. O'brien, Fredric L. Plotnick. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)OBrien, James J. Cpm In Construction Management James J. O'brien, Fredric L. Plotnick. McGraw-Hill, 1999.
Lua MLA (8ú heag.)OBrien, James J. Cpm In Construction Management James J. O'brien, Fredric L. Plotnick. McGraw-Hill, 1999.
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