APA Style
SCHREIBER, Thomas. (2009).
Penguins .
Washington:
National Geographic.
Chicago Style
SCHREIBER, Thomas.
Penguins.
Washington:
National Geographic,
2009.
Text.
MLA Style
SCHREIBER, Thomas.
Penguins.
Washington:
National Geographic,
2009.
Text.
Turabian Style
SCHREIBER, Thomas.
Penguins.
Washington:
National Geographic,
2009.
Print.