Gaya APA
Hirschey, J, L, &, M.
(1990).
Managerial Economics
(
6)
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United States of America:
The Dryden Press.
Gaya MLA
Hirschey, James, L.Pappas, &, Mark.
"Managerial Economics".
6
United States of America:
The Dryden Press,
1990.
Text.