APA
Dregne H. E., Willis W. O., Crop Science Society of America. CSSA, Soil Science Society of America. SSA & American Society of Agronomy. ASA. (1983). Dryland agriculture. Madison, WI: American Society of Agronomy; Crop Science Society of America; Soil Science Society of America.
Chicago
Dregne H E, Willis W O.ed, Crop Science Society of America. CSSA, Soil Science Society of America. SSA and American Society of Agronomy. ASA. 1983. Dryland agriculture. Madison, WI: American Society of Agronomy; Crop Science Society of America; Soil Science Society of America.
Harvard
Dregne H. E., Willis W. O., Crop Science Society of America. CSSA, Soil Science Society of America. SSA and American Society of Agronomy. ASA. (1983). Dryland agriculture. Madison, WI: American Society of Agronomy; Crop Science Society of America; Soil Science Society of America.
MLA
Dregne H E, Willis W O.ed, Crop Science Society of America. CSSA, Soil Science Society of America. SSA and American Society of Agronomy. ASA. Dryland agriculture. Madison, WI: American Society of Agronomy; Crop Science Society of America; Soil Science Society of America. 1983.