Philippines. Institute for Labor Studies. (2001). A Closer look into the working conditions and occupational safety and health of informal sector workers: A compilation of case studies. Institute for Labor Studies.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Philippines. Institute for Labor Studies. A Closer Look into the Working Conditions and Occupational Safety and Health of Informal Sector Workers: A Compilation of Case Studies. Manila: Institute for Labor Studies, 2001.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Philippines. Institute for Labor Studies. A Closer Look into the Working Conditions and Occupational Safety and Health of Informal Sector Workers: A Compilation of Case Studies. Institute for Labor Studies, 2001.
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