RIGGS, H. E. (1994). Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)RIGGS, Henry E. Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons, 1994.
Lua MLA (8ú heag.)RIGGS, Henry E. Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons, 1994.
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