APA Style
Ennos, Roland. (2001).
Trees .
USA:
Smithsonian Institution Press.
Chicago Style
Ennos, Roland.
Trees.
USA:
Smithsonian Institution Press,
2001.
Text.
MLA Style
Ennos, Roland.
Trees.
USA:
Smithsonian Institution Press,
2001.
Text.
Turabian Style
Ennos, Roland.
Trees.
USA:
Smithsonian Institution Press,
2001.
Print.