Gaya APA
Assessment of erosion. (1980).
Chichester:
John Wiley and sons.
Gaya Chicago
Assessment of erosion.
.
Chichester:
John Wiley and sons,
1980.
Tesis.
Gaya MLA
Assessment of erosion.
.
Chichester:
John Wiley and sons,
1980.
Tesis.
Gaya Turabian
Assessment of erosion.
Chichester:
John Wiley and sons,
1980.
Tesis.