Gaya APA
Soil erosion and its control. (1986).
New York:
Van Nortrand Reinhold Company.
Gaya Chicago
Soil erosion and its control.
text.
New York:
Van Nortrand Reinhold Company,
1986.
.
Gaya MLA
Soil erosion and its control.
text.
New York:
Van Nortrand Reinhold Company,
1986.
.
Gaya Turabian
Soil erosion and its control.
New York:
Van Nortrand Reinhold Company,
1986.
.