APA Style
NORTHUP, Solomon. ().
Twelve years a slave .
:
Penguin.
Chicago Style
NORTHUP, Solomon.
Twelve years a slave.
:
Penguin,
.
Text.
MLA Style
NORTHUP, Solomon.
Twelve years a slave.
:
Penguin,
.
Text.
Turabian Style
NORTHUP, Solomon.
Twelve years a slave.
:
Penguin,
.
Print.