Von Richthofen, W. (2002). Labour inspection: A guide to the profession. International Labour Office.
芝加哥风格引文Von Richthofen, W. Labour Inspection: A Guide to the Profession. Geneva: International Labour Office, 2002.
MLA引文Von Richthofen, W. Labour Inspection: A Guide to the Profession. International Labour Office, 2002.
警告：这些引文格式不一定是100％准确.