Kogan, J. (1984). International directory of soybean entomologists. Illinois: SIRIC.
Dyfyniad Arddull ChicagoKogan, Jenny. International Directory of Soybean Entomologists. Illinois: SIRIC, 1984.
Dyfyniad MLAKogan, Jenny. International Directory of Soybean Entomologists. Illinois: SIRIC, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.