Boff, L. (2008). Essential care: An ethics of human nature. Baylor University Press.
芝加哥风格引文Boff, Leonardo. Essential Care: An Ethics of Human Nature. Waco, TX: Baylor University Press, 2008.
MLA引文Boff, Leonardo. Essential Care: An Ethics of Human Nature. Baylor University Press, 2008.
警告：这些引文格式不一定是100％准确.