APA-viite (7. p.)
Olsen, W. C. (1991). Agricultural economics and rural sociology: The contemporary core literature. Cornell Univ..
Chicago-viite (17. p.)
Olsen, Wallace C. Agricultural Economics and Rural Sociology: The Contemporary Core Literature. London: Cornell Univ., 1991.
MLA-viite (9. p.)
Olsen, Wallace C. Agricultural Economics and Rural Sociology: The Contemporary Core Literature. Cornell Univ., 1991.
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