Gaya APA
Ross, Robert C.. (1951).
An introduction to agricultural economics .
New York:
McGraw-Hill.
Gaya Chicago
Ross, Robert C..
An introduction to agricultural economics.
New York:
McGraw-Hill,
1951.
.
Gaya MLA
Ross, Robert C..
An introduction to agricultural economics.
New York:
McGraw-Hill,
1951.
.
Gaya Turabian
Ross, Robert C..
An introduction to agricultural economics.
New York:
McGraw-Hill,
1951.
.