Armstrong, D. M. (1973). Belief truth and knowledge. Cambridge Univ. Press.
芝加哥风格引文Armstrong, David M. Belief Truth and Knowledge. Cambridge [u.a.]: Cambridge Univ. Press, 1973.
MLA引文Armstrong, David M. Belief Truth and Knowledge. Cambridge Univ. Press, 1973.
警告：这些引文格式不一定是100％准确.
