Urlanda, R. V. (2000). Mining: A sunset industry that could shine again. Philippine Panorama.
Chicagoスタイル(17版)引用形式Urlanda, Randy V. "Mining: A Sunset Industry That Could Shine Again." Philippine Panorama 2000.
MLA(9版)引用形式Urlanda, Randy V. "Mining: A Sunset Industry That Could Shine Again." Philippine Panorama, 2000.
警告: この引用は必ずしも正確ではありません.