Gaya APA
Drucker, Peter F.. (1980).
Managing in Turbulent Times .
Great Britain:
William Hainemann.
Gaya Chicago
Drucker, Peter F..
Managing in Turbulent Times.
Great Britain:
William Hainemann,
1980.
Texts.
Gaya MLA
Drucker, Peter F..
Managing in Turbulent Times.
Great Britain:
William Hainemann,
1980.
Texts.
Gaya Turabian
Drucker, Peter F..
Managing in Turbulent Times.
Great Britain:
William Hainemann,
1980.
Texts.