Gaya APA
DRUCKER, PETER F.. (2001).
Management Challenges for the 21st Century (I).
New York:
HarperBusiness.
Gaya Chicago
DRUCKER, PETER F..
Management Challenges for the 21st Century .
I
New York:
HarperBusiness,
2001.
SURJADI S. CORNER.
Gaya MLA
DRUCKER, PETER F..
Management Challenges for the 21st Century .
I
New York:
HarperBusiness,
2001.
SURJADI S. CORNER.
Gaya Turabian
DRUCKER, PETER F..
Management Challenges for the 21st Century .
I
New York:
HarperBusiness,
2001.
SURJADI S. CORNER.