Não informado. (1909). Circular of the Department of Agriculture, Trinidad and Tobago. Circular of the Department of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Circular of the Department of Agriculture, Trinidad and Tobago. Port of Spain: Circular of the Department of Agriculture, 1909.
MLA(8版)引用形式Não informado. Circular of the Department of Agriculture, Trinidad and Tobago. Circular of the Department of Agriculture, 1909.
警告: この引用は必ずしも正確ではありません.