Penggayaan APA
(at.all). (1997).
Engineering Economy (10).
New York:
Prentice Hall.
Chicago Style
(at.all).
Engineering Economy.
10
New York:
Prentice Hall,
1997.
Text.
MLA Style
(at.all).
Engineering Economy.
10
New York:
Prentice Hall,
1997.
Text.
Turabian Style
(at.all).
Engineering Economy.
10
New York:
Prentice Hall,
1997.
Print.