O'Brien, J. J. (1993). CPM in construction management (4th ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)O'Brien, James J. CPM in Construction Management. 4th ed. New York: McGraw-Hill, 1993.
Cita MLA (9a ed.)O'Brien, James J. CPM in Construction Management. 4th ed. McGraw-Hill, 1993.
Precaución: Estas citas no son 100% exactas.