APA Style
Gannij, Joan. ().
Hidden Hippo .
:
Barefoot Books.
Chicago Style
Gannij, Joan.
Hidden Hippo.
:
Barefoot Books,
.
Text.
MLA Style
Gannij, Joan.
Hidden Hippo.
:
Barefoot Books,
.
Text.
Turabian Style
Gannij, Joan.
Hidden Hippo.
:
Barefoot Books,
.
Print.