Παραπομπή σε μορφή APA (7η εκδ.)

Smith, G. W. (1973). Engineering economy: Analysis of capital expenditures (2nd ed.). Iowa State University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Smith, Gerald W. Engineering Economy: Analysis of Capital Expenditures. 2nd ed. Ames: Iowa State University Press, 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Smith, Gerald W. Engineering Economy: Analysis of Capital Expenditures. 2nd ed. Iowa State University Press, 1973.