Gaya APA
STALLINGS, J.H.. (1957).
Soil Conservation .
New Jersey:
Prenatice Hall.
Gaya Chicago
STALLINGS, J.H..
Soil Conservation.
New Jersey:
Prenatice Hall,
1957.
Teks.
Gaya MLA
STALLINGS, J.H..
Soil Conservation.
New Jersey:
Prenatice Hall,
1957.
Teks.
Gaya Turabian
STALLINGS, J.H..
Soil Conservation.
New Jersey:
Prenatice Hall,
1957.
Teks.