Gaya APA
Wallis, J. A. Nicholas. (1997).
Intensified systems of farming in the tropics and subtropics .
Washington:
The World Bank.
Gaya Chicago
Wallis, J. A. Nicholas.
Intensified systems of farming in the tropics and subtropics.
Washington:
The World Bank,
1997.
Text.
Gaya MLA
Wallis, J. A. Nicholas.
Intensified systems of farming in the tropics and subtropics.
Washington:
The World Bank,
1997.
Text.
Gaya Turabian
Wallis, J. A. Nicholas.
Intensified systems of farming in the tropics and subtropics.
Washington:
The World Bank,
1997.
Print.