Forbes, M. T. (2004). Petrographic characterization of coals of the Semirara formation in Maniguin Wells, Sibay basin, Mindoro-Panay area.
Chicago Style (17. basım) AtıfForbes, Monina Tesalona. Petrographic Characterization of Coals of the Semirara Formation in Maniguin Wells, Sibay Basin, Mindoro-Panay Area. 2004.
MLA (9th ed.) AtıfForbes, Monina Tesalona. Petrographic Characterization of Coals of the Semirara Formation in Maniguin Wells, Sibay Basin, Mindoro-Panay Area. 2004.
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