APA Style
DeGarmo, E, P. et al
(1984).
Engineering Economy
(
Edition 7)
.
United State of America:
Macmillan Press LTD.
MLA Style
DeGarmo, E., Paul. et al.
"Engineering Economy".
Edition 7
United State of America:
Macmillan Press LTD,
1984.
Text.