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引文Röbbelen, Gerhard. Oil Crops of the World: Their Breeding and Utilization. New York: McGraw-Hill, 1989.
警告:这些引文格式不一定是100%准确.