Gaya APA
Drucker,Peter F. (2006).
The Practice of management .
USA:
Harper Collins Pub..
Gaya Chicago
Drucker,Peter F.
The Practice of management.
USA:
Harper Collins Pub.,
2006.
Text.
Gaya MLA
Drucker,Peter F.
The Practice of management.
USA:
Harper Collins Pub.,
2006.
Text.
Gaya Turabian
Drucker,Peter F.
The Practice of management.
USA:
Harper Collins Pub.,
2006.
Print.