References
- Buber, Martin. 1970. I and thou. Tr. Walter Kaufmann. New York: Charles Scribner's Sons.
- McGinn, Colin. 1994. Thought. In Samuel Guttenplan (ed.), A companion to the philosophy of mind, 585–9. Oxford: Basil Blackwell.
- Sapir, Edward. 1921. Language: an introduction to the study of speech. New York: Harcourt, Brace & World.