Macairan, E., & Simeon, L. M. 49 Siargao firms found violating DENR laws. The Philippine Star.
芝加哥风格引文Macairan, Evelyn, 与 Louise Maureen Simeon. "49 Siargao Firms Found Violating DENR Laws." The Philippine Star .
MLA引文Macairan, Evelyn, 与 Louise Maureen Simeon. "49 Siargao Firms Found Violating DENR Laws." The Philippine Star, .
警告：这些引文格式不一定是100％准确.