(1991). Profile on occupational safety and health in Papua New Guinea. International Labour Organization.
Chicagoスタイル(17版)引用形式Profile on Occupational Safety and Health in Papua New Guinea. Bangkok, Thailand: International Labour Organization, 1991.
MLA(9版)引用形式Profile on Occupational Safety and Health in Papua New Guinea. International Labour Organization, 1991.
警告: この引用は必ずしも正確ではありません.