Não informado. Agricultural research results. Science and Education Administration.
Chicago-Zitierstil (17. Ausg.)Não informado. Agricultural Research Results. Berkeley, Calif: Science and Education Administration.
MLA-Zitierstil (8. Ausg.)Não informado. Agricultural Research Results. Science and Education Administration.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.