Gaya APA
Management Economics. (1995).
Singapore:
Prentice-Hall.
Gaya Chicago
Management Economics.
Ed. 4.
Singapore:
Prentice-Hall,
1995.
.
Gaya MLA
Management Economics.
Ed. 4.
Singapore:
Prentice-Hall,
1995.
.
Gaya Turabian
Management Economics.
Singapore:
Prentice-Hall,
1995.
.