TANG, S. (1991). Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill.
Chicago-viite (17. p.)TANG, S.L. Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill, 1991.
MLA-viite (8. p.)TANG, S.L. Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill, 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.