APA Style
Legg, Gerald. (2004).
How it Works: The World of Plant Life .
New York ::
Horus Editions.
Chicago Style
Legg, Gerald.
How it Works: The World of Plant Life.
New York ::
Horus Editions,
2004.
Text.
MLA Style
Legg, Gerald.
How it Works: The World of Plant Life.
New York ::
Horus Editions,
2004.
Text.
Turabian Style
Legg, Gerald.
How it Works: The World of Plant Life.
New York ::
Horus Editions,
2004.
Print.