Gaya APA

Thuesen, G., Fabrycky, W. (1993). Engineering economy (8th ed). Englewood Cliffs, NJ: Prentice-Hall.

Gaya MLA

Thuesen, G.J.., Fabrycky, W.J.. "Engineering economy". 8th ed Englewood Cliffs, NJ: Prentice-Hall, 1993. Text.