Mercado, L. N. (1979). Elements of Filipino ethics. Divine Word University Publications.
芝加哥风格引文Mercado, Leonardo N. Elements of Filipino Ethics. Tacloban City: Divine Word University Publications, 1979.
MLA引文Mercado, Leonardo N. Elements of Filipino Ethics. Divine Word University Publications, 1979.
警告：这些引文格式不一定是100％准确.