APA Style
Drucker, Peter F.. (2001).
The Essential Drucker .
New York:
HarperCollins.
Chicago Style
Drucker, Peter F..
The Essential Drucker.
New York:
HarperCollins,
2001.
Printed Material.
MLA Style
Drucker, Peter F..
The Essential Drucker.
New York:
HarperCollins,
2001.
Printed Material.
Turabian Style
Drucker, Peter F..
The Essential Drucker.
New York:
HarperCollins,
2001.
Printed Material.