Degueldre, G. (1967). Dust sampling in mines. International Labour Office.
芝加哥风格引文Degueldre, G. Dust Sampling in Mines. Geneva: International Labour Office, 1967.
MLA引文Degueldre, G. Dust Sampling in Mines. International Labour Office, 1967.
警告：这些引文格式不一定是100％准确.