Williams, I. A. (1931). The firm of Cadbury, 1831-1931. Constable.
Chicagoスタイル(17版)引用形式Williams, Iolo Aneurin. The Firm of Cadbury, 1831-1931. London: Constable, 1931.
MLA(8版)引用形式Williams, Iolo Aneurin. The Firm of Cadbury, 1831-1931. Constable, 1931.
警告: この引用は必ずしも正確ではありません.