APA Style
Bulla, Clyde Robert. (2001).
A Tree is a Plant .
United Kingdom:
HarperCollinsPublishers.
Chicago Style
Bulla, Clyde Robert.
A Tree is a Plant.
United Kingdom:
HarperCollinsPublishers,
2001.
.
MLA Style
Bulla, Clyde Robert.
A Tree is a Plant.
United Kingdom:
HarperCollinsPublishers,
2001.
.
Turabian Style
Bulla, Clyde Robert.
A Tree is a Plant.
United Kingdom:
HarperCollinsPublishers,
2001.
.