Gaya APA
SCHARPENSEEL, H, [., SCHOMAKER, M, [.
(1990).
SOILS on a warmer earth :
.
New York:
Elsevier Science Pub..
Gaya MLA
SCHARPENSEEL, H.W., [ed.]., SCHOMAKER, M., [ed.].
"SOILS on a warmer earth :".
New York:
Elsevier Science Pub.,
1990.
Buku.