(1996). World Agricultural Production. USA: Foreign Agricultural Service - United States Department of Agriculture.
Trích dẫn kiểu ChicagoWorld Agricultural Production. USA: Foreign Agricultural Service - United States Department of Agriculture, 1996.
MLA引文World Agricultural Production. USA: Foreign Agricultural Service - United States Department of Agriculture, 1996.
警告:這些引文格式不一定是100%准確.