APA Style
Black, C. A.. (1971).
Agronomy in a changing world and research needs for the seventies .
Madison, Wisconsin:
American Society of Agronomy.
Chicago Style
Black, C. A..
Agronomy in a changing world and research needs for the seventies.
Madison, Wisconsin:
American Society of Agronomy,
1971.
Text.
MLA Style
Black, C. A..
Agronomy in a changing world and research needs for the seventies.
Madison, Wisconsin:
American Society of Agronomy,
1971.
Text.
Turabian Style
Black, C. A..
Agronomy in a changing world and research needs for the seventies.
Madison, Wisconsin:
American Society of Agronomy,
1971.
Print.