APA Style
Schreiber, Anne.. (2009).
Penguins! .
dcu:
National Geographic.
Chicago Style
Schreiber, Anne..
Penguins!.
dcu:
National Geographic,
2009.
print.
MLA Style
Schreiber, Anne..
Penguins!.
dcu:
National Geographic,
2009.
print.
Turabian Style
Schreiber, Anne..
Penguins!.
dcu:
National Geographic,
2009.
print.