Gaya APA
Soil science : methode and applications. (1994).
Malang:
Longman.
Gaya Chicago
Soil science : methode and applications.
.
Malang:
Longman,
1994.
Text.
Gaya MLA
Soil science : methode and applications.
.
Malang:
Longman,
1994.
Text.
Gaya Turabian
Soil science : methode and applications.
Malang:
Longman,
1994.
Print.