Gaya APA
Drucker, Peter F. (2009).
Managing in a Time of Great Change .
America:
Harvard Business School.
Gaya Chicago
Drucker, Peter F.
Managing in a Time of Great Change.
America:
Harvard Business School,
2009.
Buku.
Gaya MLA
Drucker, Peter F.
Managing in a Time of Great Change.
America:
Harvard Business School,
2009.
Buku.
Gaya Turabian
Drucker, Peter F.
Managing in a Time of Great Change.
America:
Harvard Business School,
2009.
Buku.