Gaya APA
Helyer,Neil. (2003).
A Color Handbook of Biological Control in Plant Protection .
United States:
Timber Press.
Gaya Chicago
Helyer,Neil.
A Color Handbook of Biological Control in Plant Protection.
United States:
Timber Press,
2003.
Non-fiction.
Gaya MLA
Helyer,Neil.
A Color Handbook of Biological Control in Plant Protection.
United States:
Timber Press,
2003.
Non-fiction.
Gaya Turabian
Helyer,Neil.
A Color Handbook of Biological Control in Plant Protection.
United States:
Timber Press,
2003.
Non-fiction.