Development Bank of the Philippines, Tacloban. Regional Development Staff. (1971). An area survey of Leyte and Samar. [s.n.
芝加哥风格引文Development Bank of the Philippines, Tacloban. Regional Development Staff. An Area Survey of Leyte and Samar. Tacloban: [s.n, 1971.
MLA引文Development Bank of the Philippines, Tacloban. Regional Development Staff. An Area Survey of Leyte and Samar. [s.n, 1971.
警告：这些引文格式不一定是100％准确.