Perkins, John, author
Abdi Tandur, 2005
Buku Teks
Perkins, John, author
Berrett-Kochler, 2004
Buku Teks
Perkins, John, author
Abdi Tandur, 2005
Buku Teks
Perkins, John
Berrett-Koehler Publishers, 2016
Buku Teks
Augustine, of Hippo, Saint, 354-430, author
Everymans Publishers, 2001
Buku Referensi