Não informado. (2002). Cement, lime and gravel. British Limemaster.
Chicagoスタイル(17版)引用形式Não informado. Cement, Lime and Gravel. London: British Limemaster, 2002.
MLA(8版)引用形式Não informado. Cement, Lime and Gravel. British Limemaster, 2002.
警告: この引用は必ずしも正確ではありません.