APA Style
Bulla, Clyde Robert. (2001).
A Tree is a Plant .
New York:
Harper Collins Publishers.
Chicago Style
Bulla, Clyde Robert.
A Tree is a Plant.
New York:
Harper Collins Publishers,
2001.
Text.
MLA Style
Bulla, Clyde Robert.
A Tree is a Plant.
New York:
Harper Collins Publishers,
2001.
Text.
Turabian Style
Bulla, Clyde Robert.
A Tree is a Plant.
New York:
Harper Collins Publishers,
2001.
Print.