Бүртгэлийн ишлэл

APA-ийн эшлэл(7 дахь хэвлэлт)
American Agricultural Economics Association, ebrary, Inc, & Martin, L. R. (1977). Traditional fields of agricultural economics, 1940s to 1970s. Published by the 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. Traditional Fields of Agricultural Economics, 1940s to 1970s. Minneapolis: Published by the University of Minnesota Press for the American Agricultural Economics Association, 1977.
MLA -ийн эшлэл (9 дэх хэвлэлт)
American Agricultural Economics Association, et al. Traditional Fields of Agricultural Economics, 1940s to 1970s. Published by the University of Minnesota Press for the American Agricultural Economics Association, 1977.
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