Hume, David
J.M. Dent & Sons , 1959
Buku Teks
Locke, John, author
Routledge, 2000
Buku Teks
Locke, John, author
Routledge, 2000
Buku Teks
edited by Robert M. Losee
Springer-Verlag, 2012
eBooks
Locke, John, author
Hackett Publishing Company, Inc., 1996
Buku Teks