Gaya APA
soil survey manual. (1951).
New Dehli:
Oxford & IBH Publishig.
Gaya Chicago
soil survey manual.
.
New Dehli:
Oxford & IBH Publishig,
1951.
Text.
Gaya MLA
soil survey manual.
.
New Dehli:
Oxford & IBH Publishig,
1951.
Text.
Gaya Turabian
soil survey manual.
New Dehli:
Oxford & IBH Publishig,
1951.
Print.