Gurney, R. (1931). British freshwater cope poda V1. Ray society.
シカゴスタイル引用形Gurney, Robert. British Freshwater Cope Poda V1. London: Ray society, 1931.
MLA引用形式Gurney, Robert. British Freshwater Cope Poda V1. Ray society, 1931.
警告: この引用は必ずしも正確ではありません.