Não informado. (1974). Quarry management and products. Quarry Managers Journal.
Chicagoスタイル(17版)引用形式Não informado. Quarry Management and Products. London: Quarry Managers Journal, 1974.
MLA(8版)引用形式Não informado. Quarry Management and Products. Quarry Managers Journal, 1974.
警告: この引用は必ずしも正確ではありません.