Urlanda, R. V. (2000). Mining: A sunset industry that could shine again. Philippine Panorama.
Citazione stile Chigago Style (17a edizione)Urlanda, Randy V. "Mining: A Sunset Industry That Could Shine Again." Philippine Panorama 2000.
Citatione MLA (9a ed.)Urlanda, Randy V. "Mining: A Sunset Industry That Could Shine Again." Philippine Panorama, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.