APA-čujuhus (7. p.)
Nelson, W. (2007). On the clean road again: Biodiesel and the future of the family farm. Fulcrum Pub..
Chicago-čujuhus (17. p.)
Nelson, Willie. On the Clean Road Again: Biodiesel and the Future of the Family Farm. Golden, Colo.: Fulcrum Pub., 2007.
MLA-čujuhus (9. p.)
Nelson, Willie. On the Clean Road Again: Biodiesel and the Future of the Family Farm. Fulcrum Pub., 2007.
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