APA-ийн эшлэл(7 дахь хэвлэлт)
American Agricultural Economics Association, ebrary, Inc, & Martin, L. R. (1981). Economics of welfare, rural development and natural resources in agriculture 1940s to 1970s. University of Minnesota Press for the American Agricultural Economics Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
American Agricultural Economics Association, Inc ebrary, ба Lee R. Martin. Economics of Welfare, Rural Development and Natural Resources in Agriculture 1940s to 1970s. Minneapolis: University of Minnesota Press for the American Agricultural Economics Association, 1981.
MLA -ийн эшлэл (9 дэх хэвлэлт)
American Agricultural Economics Association, et al. Economics of Welfare, Rural Development and Natural Resources in Agriculture 1940s to 1970s. University of Minnesota Press for the American Agricultural Economics Association, 1981.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.