Central Office of Information. (1977). Agriculture in Britain. s.n.
Chicagoスタイル(17版)引用形式Central Office of Information. Agriculture in Britain. s.l: s.n, 1977.
MLA(9版)引用形式Central Office of Information. Agriculture in Britain. s.n, 1977.
警告: この引用は必ずしも正確ではありません.