Gaya APA
Venn, J. N.. (1923).
The Foundations of Agricultural Economics .
California:
CAMBRIDGE.
Gaya Chicago
Venn, J. N..
The Foundations of Agricultural Economics.
California:
CAMBRIDGE,
1923.
Text.
Gaya MLA
Venn, J. N..
The Foundations of Agricultural Economics.
California:
CAMBRIDGE,
1923.
Text.
Gaya Turabian
Venn, J. N..
The Foundations of Agricultural Economics.
California:
CAMBRIDGE,
1923.
Print.