Penggayaan APA
DOUGLAS, Evan J.. (1987).
Managerial economics: .
New Jersey:
Prentice Hall.
Chicago Style
DOUGLAS, Evan J..
Managerial economics:.
New Jersey:
Prentice Hall,
1987.
Buku.
MLA Style
DOUGLAS, Evan J..
Managerial economics:.
New Jersey:
Prentice Hall,
1987.
Buku.
Turabian Style
DOUGLAS, Evan J..
Managerial economics:.
New Jersey:
Prentice Hall,
1987.
Buku.