APA Style
DRUCKER, Peter F.. (2001).
The essential Drucker: in one volume the best of sixty years, c.1-2 .
United States of America:
Harper Collins.
Chicago Style
DRUCKER, Peter F..
The essential Drucker: in one volume the best of sixty years, c.1-2.
United States of America:
Harper Collins,
2001.
Text.
MLA Style
DRUCKER, Peter F..
The essential Drucker: in one volume the best of sixty years, c.1-2.
United States of America:
Harper Collins,
2001.
Text.
Turabian Style
DRUCKER, Peter F..
The essential Drucker: in one volume the best of sixty years, c.1-2.
United States of America:
Harper Collins,
2001.
Print.