APA Style
Drucker, Peter F.. (2001).
The essential Drucker : selections from the management works of Peter F. Drucker. .
New York:
Harper Business.
Chicago Style
Drucker, Peter F..
The essential Drucker : selections from the management works of Peter F. Drucker..
New York:
Harper Business,
2001.
Text.
MLA Style
Drucker, Peter F..
The essential Drucker : selections from the management works of Peter F. Drucker..
New York:
Harper Business,
2001.
Text.
Turabian Style
Drucker, Peter F..
The essential Drucker : selections from the management works of Peter F. Drucker..
New York:
Harper Business,
2001.
Print.