Obmerga, C. (2011). Boosting your lung capacity. HealthToday Philippines.
Cita Chicago Style (17a ed.)Obmerga, Christian. "Boosting Your Lung Capacity." HealthToday Philippines 2011.
Cita MLA (9a ed.)Obmerga, Christian. "Boosting Your Lung Capacity." HealthToday Philippines, 2011.
Precaución: Estas citas no son 100% exactas.