Röbbelen, G. (1989). Oil crops of the world: Their breeding and utilization. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoRöbbelen, Gerhard. Oil Crops of the World: Their Breeding and Utilization. New York: McGraw-Hill, 1989.
MLA CitationRöbbelen, Gerhard. Oil Crops of the World: Their Breeding and Utilization. New York: McGraw-Hill, 1989.
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