Grant, E. L. (1990). Principles Of Engineering Economy Eugene Grant; W. Grant Ireson And Richards Leavenworth. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Grant, Eugene L. Principles Of Engineering Economy Eugene Grant; W. Grant Ireson And Richards Leavenworth. John Wiley & Sons, 1990.
Lua MLA (8ú heag.)Grant, Eugene L. Principles Of Engineering Economy Eugene Grant; W. Grant Ireson And Richards Leavenworth. John Wiley & Sons, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.