APA Style
Troeh, Frederick R.; J. Arthur Hobbs; Roy L. Donahue. (2009).
Soil and water conservation for productivity and environmental protection.-- 4th ed. .
:
.
Chicago Style
Troeh, Frederick R.; J. Arthur Hobbs; Roy L. Donahue.
Soil and water conservation for productivity and environmental protection.-- 4th ed..
:
,
2009.
.
MLA Style
Troeh, Frederick R.; J. Arthur Hobbs; Roy L. Donahue.
Soil and water conservation for productivity and environmental protection.-- 4th ed..
:
,
2009.
.
Turabian Style
Troeh, Frederick R.; J. Arthur Hobbs; Roy L. Donahue.
Soil and water conservation for productivity and environmental protection.-- 4th ed..
:
,
2009.
.