355179 Spellman, F. R. (1999). Confined space entry: A guide to compliance. Lancaster, Pa. : Technomic Pub. Co..
芝加哥风格引文355179 Spellman, Frank R. Confined Space Entry: A Guide to Compliance. Lancaster, Pa. : Technomic Pub. Co., 1999.
MLA引文355179 Spellman, Frank R. Confined Space Entry: A Guide to Compliance. Lancaster, Pa. : Technomic Pub. Co., 1999.
警告：这些引文格式不一定是100％准确.