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.