NEWMAN, D. G., ESCHENBACH, T. G., & LAVELLE, J. P. (2004). Study guide for engineering economic analysis (Ed.9.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)NEWMAN, Donald G., Ted G. ESCHENBACH, agus Jerome P. LAVELLE. Study Guide for Engineering Economic Analysis. Ed.9. New York: Oxford University Press, 2004.
Lua MLA (9ú heag.)NEWMAN, Donald G., et al. Study Guide for Engineering Economic Analysis. Ed.9. Oxford University Press, 2004.
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