APA Style
Drucker, Peter F.. (1985).
The Effective Executive .
New York:
Harper Business.
Chicago Style
Drucker, Peter F..
The Effective Executive.
New York:
Harper Business,
1985.
Text.
MLA Style
Drucker, Peter F..
The Effective Executive.
New York:
Harper Business,
1985.
Text.
Turabian Style
Drucker, Peter F..
The Effective Executive.
New York:
Harper Business,
1985.
Print.