Gaya APA
Drucker, Peter F.. (1992).
MANAGING FOR THE FUTURE .
United States:
PENGUIN GROUP.
Gaya Chicago
Drucker, Peter F..
MANAGING FOR THE FUTURE.
United States:
PENGUIN GROUP,
1992.
Text.
Gaya MLA
Drucker, Peter F..
MANAGING FOR THE FUTURE.
United States:
PENGUIN GROUP,
1992.
Text.
Gaya Turabian
Drucker, Peter F..
MANAGING FOR THE FUTURE.
United States:
PENGUIN GROUP,
1992.
Print.