Gaya APA
A, S, S., Paul, M.
(1927).
Slope Morfologi
(
Benchmark Paper In Geology)
.
Amerika:
John Wiley & Sons.
Gaya MLA
A, Schumm, Stanley., Paul, Mosley.
"Slope Morfologi".
Benchmark Paper In Geology
Amerika:
John Wiley & Sons,
1927.
Text.