Gaya APA
Douglas, E, J. (1992).
Managerial Economics : Analysis And Strategy Fourth Edition (ed. 4).
London:
Prentice-Hall.
Gaya MLA
Douglas, Evan, J..
"Managerial Economics : Analysis And Strategy Fourth Edition".
ed. 4
London:
Prentice-Hall,
1992.
Buku E.MANAJEMEN.