Não informado. Sunflower newsletter. International Sunflower Association.
Chicagoスタイル(17版)引用形式Não informado. Sunflower Newsletter. Amsterdam: International Sunflower Association.
MLA(8版)引用形式Não informado. Sunflower Newsletter. International Sunflower Association.
警告: この引用は必ずしも正確ではありません.