Gaya APA

THUESEN, H. et al (1977). ENGINEERING ECONOMY 5 TH EDITION (5th). Englewood Cliffs, N J.: PRENTICE HALL.

Gaya MLA

THUESEN, H.G. et al. "ENGINEERING ECONOMY 5 TH EDITION". 5th Englewood Cliffs, N J.: PRENTICE HALL, 1977. Textbook.