APA Style
Card, Orson. (1991).
Ender's Game .
New York:
A Tor Book.
Chicago Style
Card, Orson.
Ender's Game.
New York:
A Tor Book,
1991.
.
MLA Style
Card, Orson.
Ender's Game.
New York:
A Tor Book,
1991.
.
Turabian Style
Card, Orson.
Ender's Game.
New York:
A Tor Book,
1991.
.