Blank, L. T., & Tarquin, A. (2012). Engineering economy (7th ed., International ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Blank, Leland T., agus Anthony Tarquin. Engineering Economy. 7th ed., International ed. New York: McGraw-Hill, 2012.
Lua MLA (9ú heag.)Blank, Leland T., agus Anthony Tarquin. Engineering Economy. 7th ed., International ed. McGraw-Hill, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.