APA aipamena

(1991). Profile on occupational safety and health in Papua New Guinea. International Labour Organization.

Chicago Style aipamena

Profile on Occupational Safety and Health in Papua New Guinea. Bangkok, Thailand: International Labour Organization, 1991.

MLA aipamena

Profile on Occupational Safety and Health in Papua New Guinea. International Labour Organization, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.