Gaya APA
GOODWIN, John W. & H. E. Drummond. (0).
Agricultural economis .
Virginia:
.
Gaya Chicago
GOODWIN, John W. & H. E. Drummond.
Agricultural economis.
Virginia:
,
0.
Buku.
Gaya MLA
GOODWIN, John W. & H. E. Drummond.
Agricultural economis.
Virginia:
,
0.
Buku.
Gaya Turabian
GOODWIN, John W. & H. E. Drummond.
Agricultural economis.
Virginia:
,
0.
Buku.