APA Style
Walker, Richard. (1996).
Inventions that changed the world .
London:
Readers Digest.
Chicago Style
Walker, Richard.
Inventions that changed the world.
London:
Readers Digest,
1996.
Text.
MLA Style
Walker, Richard.
Inventions that changed the world.
London:
Readers Digest,
1996.
Text.
Turabian Style
Walker, Richard.
Inventions that changed the world.
London:
Readers Digest,
1996.
Print.