Gaya APA
Kirkby, M.J.. (1980).
SOIL EROSION .
Norwegia:
John Wiley And Sons.
Gaya Chicago
Kirkby, M.J..
SOIL EROSION.
Norwegia:
John Wiley And Sons,
1980.
Text.
Gaya MLA
Kirkby, M.J..
SOIL EROSION.
Norwegia:
John Wiley And Sons,
1980.
Text.
Gaya Turabian
Kirkby, M.J..
SOIL EROSION.
Norwegia:
John Wiley And Sons,
1980.
Print.