APA Style
Keene, Carolyn. (1988).
The Hidden Staircase (Reprint edition).
New York:
Penguin Young Readers Group.
Chicago Style
Keene, Carolyn.
The Hidden Staircase.
Reprint edition
New York:
Penguin Young Readers Group,
1988.
Text.
MLA Style
Keene, Carolyn.
The Hidden Staircase.
Reprint edition
New York:
Penguin Young Readers Group,
1988.
Text.
Turabian Style
Keene, Carolyn.
The Hidden Staircase.
Reprint edition
New York:
Penguin Young Readers Group,
1988.
Print.