Mi-Kyoung Lee (2005) Epistemology after Protagoras: Responses to Relativism in Plato, Aristotle, and Democritus Oxford University Press. Chap.3. Protagoras and relativism. 30-45.

Lee (2005) Epistemology after Protagoras, Ch.3 プロタゴラスと相対主義

Timothy Williamson (2000) Knowledge and its Limits, Oxford University Press. Chap.1. A State of Mind. 21-48. [here 33-48.]

最も一般的な叙実的心的状態としての知識．信念との関係 Williamson (2000) KIL, Ch.1 #2

Timothy Williamson (2000) Knowledge and its Limits, Oxford University Press. Chap.1. A State of Mind. 21-48. [here 21-33.]

心的状態としての知識．知識概念の分析不可能性 Williamson (2000) KIL, Ch.1 #1

Timothy Williamson (2000) Knowledge and its Limits, Oxford University Press. Introduction. 1-20. [here 1-11.]

知識第一主義とその応用 Williamson (2000) KIL, Introduction #1

Timothy Williamson (2000) Knowledge and its Limits Oxford University Press. Chap.2. Broadness. 49-64. 1章では Williamson 自身の基本的な立場が粗描されたが，2章では内在主義的な議論への反論が詳細に行われる．

知識という心的態度そのものに関する外在主義 Williamson (2000) KIL, Ch.2