(2000). Leighton Contractors (Philippines) Inc. awarded ISO 14001 certification for environmental management. Philippine Star.
Citação norma Chicago"Leighton Contractors (Philippines) Inc. Awarded ISO 14001 Certification for Environmental Management." Philippine Star 2000.
Citação norma MLA"Leighton Contractors (Philippines) Inc. Awarded ISO 14001 Certification for Environmental Management." Philippine Star, 2000.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.