Quarterly hogs and pigs.

MLA

United States. Quarterly hogs and pigs. Washington, D.C. : National Agricultural Statistics Service (NASS), Agricultural Statistics Board, U.S. Dept. of Agriculture, 2001-

APA

United States. (2001). Quarterly hogs and pigs. Washington, D.C. : National Agricultural Statistics Service (NASS), Agricultural Statistics Board, U.S. Dept. of Agriculture.

Chicago

United States. Quarterly hogs and pigs. Washington, D.C. : National Agricultural Statistics Service (NASS), Agricultural Statistics Board, U.S. Dept. of Agriculture, 2001-