APA Style
Kohnke, Helmut. (1959).
Soil Conservation .
New York:
McGraw-Hill Book Company, Inc.
Chicago Style
Kohnke, Helmut.
Soil Conservation.
New York:
McGraw-Hill Book Company, Inc,
1959.
Hard Copy.
MLA Style
Kohnke, Helmut.
Soil Conservation.
New York:
McGraw-Hill Book Company, Inc,
1959.
Hard Copy.
Turabian Style
Kohnke, Helmut.
Soil Conservation.
New York:
McGraw-Hill Book Company, Inc,
1959.
Hard Copy.