Obusan, T. B. (1998). Roots of Filipino spirituality. Mamamathala.
芝加哥风格引文Obusan, Teresita B. Roots of Filipino Spirituality. [Manila]: Mamamathala, 1998.
MLA引文Obusan, Teresita B. Roots of Filipino Spirituality. Mamamathala, 1998.
警告：这些引文格式不一定是100％准确.