Gaya APA
DRUCKER, Peter F.. (1982).
The changing world of the executive .
New York:
Times Books.
Gaya Chicago
DRUCKER, Peter F..
The changing world of the executive.
New York:
Times Books,
1982.
Text.
Gaya MLA
DRUCKER, Peter F..
The changing world of the executive.
New York:
Times Books,
1982.
Text.
Gaya Turabian
DRUCKER, Peter F..
The changing world of the executive.
New York:
Times Books,
1982.
Print.