Gaya APA
Safire, William. (1987).
Freedom (Kesatu).
New York:
Doubleday & Company, Inc.
Gaya Chicago
Safire, William.
Freedom.
Kesatu
New York:
Doubleday & Company, Inc,
1987.
.
Gaya MLA
Safire, William.
Freedom.
Kesatu
New York:
Doubleday & Company, Inc,
1987.
.
Gaya Turabian
Safire, William.
Freedom.
Kesatu
New York:
Doubleday & Company, Inc,
1987.
.