Author: Descartes, Rene
Title: Meditations on First Philosophy
Publisher: Cambridge UP
Edition: 1996
ISBN: 0521558182

Author: Locke, John
Title: An Essay Concerning Human Understanding
Innate ideas, Book I Chapter II and Ch IV secs 8-18
Personal identity, Book II Chapter 27
General terms, Book III Chapter III secs 1-9, 14-20

Author: Berkeley, George
Title: A Treatise Concerning the Principles of Human Knowledge
Publisher: Oxford UP
Edition: 1998
ISBN: 0198751613

Author: Hume, David
Title: An Enquiry Concerning Human Understanding
Publisher: Oxford UP
Edition: 1999
ISBN: 0198752482

Author: Kant, Immanuel
Title: Critique of Pure Reason (abridged)
Publisher: Hackett
Edition: 1999
ISBN: 0872204480