Não informado. (2003). Seed technology. Association of Official Seed Analysts.
Chicagoスタイル(17版)引用形式Não informado. Seed Technology. Lincoln, Neb: Association of Official Seed Analysts, 2003.
MLA(8版)引用形式Não informado. Seed Technology. Association of Official Seed Analysts, 2003.
警告: この引用は必ずしも正確ではありません.