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Gaya APA
The Portable MBA. (1990).
USA:
John Wiley & Sons Inc.
Gaya Chicago
The Portable MBA.
.
USA:
John Wiley & Sons Inc,
1990.
Text.
Gaya MLA
The Portable MBA.
.
USA:
John Wiley & Sons Inc,
1990.
Text.
Gaya Turabian
The Portable MBA.
USA:
John Wiley & Sons Inc,
1990.
Print.