Gaya APA

Degarmo, E. (1997). EKONOMI TEKNIK : ENGINEERING ECONOMY TENTH EDITIONJILID 1 (10). Jakarta: prenhallindo.

Gaya MLA

Degarmo, E.Paul. "EKONOMI TEKNIK : ENGINEERING ECONOMY TENTH EDITIONJILID 1". 10 Jakarta: prenhallindo, 1997. Buku Inti.