Gaya APA
Colvin, L., Speare, E. (2004).
The Usborne Living World Encyclopedia: Tumbuhan, Hewan, Dan Alam / Leslie Colvin .
[s.l.]:
Pega Media.
Gaya MLA
Colvin, Leslie., Speare, Emma.
"The Usborne Living World Encyclopedia: Tumbuhan, Hewan, Dan Alam / Leslie Colvin".
[s.l.]:
Pega Media,
2004.
Text.