Hume, David, author
Oxford University Press, 2000
Buku Teks
Hume, David
J.M. Dent & Sons , 1959
Buku Teks
Von Mises, Ludwig, 1881-1973, author
Yale University Press, 1963
Buku Klasik
Krutch, Joseph Wood, author
Random House, 1959
Buku Teks
Krutch, Joseph Wood, author
Greenwood Press, 1979
Buku Teks