Röbbelen, G. (1989). Oil crops of the world: Their breeding and utilization. New York: McGraw-Hill.
Chicago-stil citatRöbbelen, Gerhard. Oil Crops of the World: Their Breeding and Utilization. New York: McGraw-Hill, 1989.
MLA-referensRöbbelen, Gerhard. Oil Crops of the World: Their Breeding and Utilization. New York: McGraw-Hill, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.