Harrison, I. W. Capital Invesment Appraisal Ian W. Harrison. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Harrison, Ian W. Capital Invesment Appraisal Ian W. Harrison. McGraw-Hill.
Lua MLA (8ú heag.)Harrison, Ian W. Capital Invesment Appraisal Ian W. Harrison. McGraw-Hill.
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