Gaya APA
Weisman, Alan. (2007).
The World Without Us .
New York:
St. Martins Press.
Gaya Chicago
Weisman, Alan.
The World Without Us.
New York:
St. Martins Press,
2007.
Text.
Gaya MLA
Weisman, Alan.
The World Without Us.
New York:
St. Martins Press,
2007.
Text.
Gaya Turabian
Weisman, Alan.
The World Without Us.
New York:
St. Martins Press,
2007.
Print.