Gaya APA
DOUGLAS, E, J., CALLAN, S. (1995).
Managerial Economics. Analysis and Strategy 4ed (4).
Singapore:
Prentice Hall.
Gaya MLA
DOUGLAS, Evan, J., CALLAN, Scott.
"Managerial Economics. Analysis and Strategy 4ed".
4
Singapore:
Prentice Hall,
1995.
Printed.