Gaya APA
Penning de Vries , Frits. (2003).
System approach for agricultural development .
Dordrecht:
Kluwer Academic Publisher.
Gaya Chicago
Penning de Vries , Frits.
System approach for agricultural development.
Dordrecht:
Kluwer Academic Publisher,
2003.
Text.
Gaya MLA
Penning de Vries , Frits.
System approach for agricultural development.
Dordrecht:
Kluwer Academic Publisher,
2003.
Text.
Gaya Turabian
Penning de Vries , Frits.
System approach for agricultural development.
Dordrecht:
Kluwer Academic Publisher,
2003.
Print.