Penggayaan APA
GERRARD, J.. (1992).
Soil geomorphology .
New York:
Chapman & Hall.
Chicago Style
GERRARD, J..
Soil geomorphology.
New York:
Chapman & Hall,
1992.
Buku.
MLA Style
GERRARD, J..
Soil geomorphology.
New York:
Chapman & Hall,
1992.
Buku.
Turabian Style
GERRARD, J..
Soil geomorphology.
New York:
Chapman & Hall,
1992.
Buku.