Não informado. (1974). Quarry management and products. Quarry Managers Journal.
Cita Chicago Style (17a ed.)Não informado. Quarry Management and Products. London: Quarry Managers Journal, 1974.
Cita MLA (8a ed.)Não informado. Quarry Management and Products. Quarry Managers Journal, 1974.
Precaución: Estas citas no son 100% exactas.