Gaya APA
Varnes, David J.. (1978).
Slope movement types and process .
:
TRB.
Gaya Chicago
Varnes, David J..
Slope movement types and process.
:
TRB,
1978.
Computer Software.
Gaya MLA
Varnes, David J..
Slope movement types and process.
:
TRB,
1978.
Computer Software.
Gaya Turabian
Varnes, David J..
Slope movement types and process.
:
TRB,
1978.
Computer Software.