Gaya APA
Phillips, Ronald E., Phillips, Shirley H.. (1984).
No-tillage agriculture .
New York:
Van Nostrand Reinhold Company .
Gaya Chicago
Phillips, Ronald E., Phillips, Shirley H..
No-tillage agriculture.
New York:
Van Nostrand Reinhold Company ,
1984.
Text.
Gaya MLA
Phillips, Ronald E., Phillips, Shirley H..
No-tillage agriculture.
New York:
Van Nostrand Reinhold Company ,
1984.
Text.
Gaya Turabian
Phillips, Ronald E., Phillips, Shirley H..
No-tillage agriculture.
New York:
Van Nostrand Reinhold Company ,
1984.
Print.