Gaya APA
Unger, Paul W. (2006).
Soil and water conservation handbook : policies, practice, conditions, and terms .
United states:
Hawort Food & Agricultural Products Press.
Gaya Chicago
Unger, Paul W.
Soil and water conservation handbook : policies, practice, conditions, and terms.
United states:
Hawort Food & Agricultural Products Press,
2006.
Text.
Gaya MLA
Unger, Paul W.
Soil and water conservation handbook : policies, practice, conditions, and terms.
United states:
Hawort Food & Agricultural Products Press,
2006.
Text.
Gaya Turabian
Unger, Paul W.
Soil and water conservation handbook : policies, practice, conditions, and terms.
United states:
Hawort Food & Agricultural Products Press,
2006.
Print.