Gaya APA
Lal, Rattan. (1990).
Soil erosion in the tropics: Principles and conservation (text).
New York:
McGraw-Hill.
Gaya Chicago
Lal, Rattan.
Soil erosion in the tropics: Principles and conservation.
text
New York:
McGraw-Hill,
1990.
.
Gaya MLA
Lal, Rattan.
Soil erosion in the tropics: Principles and conservation.
text
New York:
McGraw-Hill,
1990.
.
Gaya Turabian
Lal, Rattan.
Soil erosion in the tropics: Principles and conservation.
text
New York:
McGraw-Hill,
1990.
.