Gaya APA
Kennedy, Paul. (1993).
Preparing for the twenty-first century .
New York:
Random House.
Gaya Chicago
Kennedy, Paul.
Preparing for the twenty-first century.
New York:
Random House,
1993.
Text.
Gaya MLA
Kennedy, Paul.
Preparing for the twenty-first century.
New York:
Random House,
1993.
Text.
Gaya Turabian
Kennedy, Paul.
Preparing for the twenty-first century.
New York:
Random House,
1993.
Print.