George, Vensus A., author
Council for Research in Values and Philosophy, 2008
Buku Teks
Smith, Huston, author
Yayasan Obor Indonesia, 2008
Buku Teks
James, William, author
Mentor Books, 1958
Buku Teks
Eliade, Mircea, author
Sheed and Ward, 1958
Buku Teks
Ferm, Vergillius
Littlefield, Adams, 1961
Buku Teks