Sears, William, author
Bahá'i Publishing Trust, 1960
Buku Teks
Ictiar Baru Van Hoeve, 1994
Buku Teks
Collins, Williams P., author
George Ronald, 1990
Buku Referensi
Departeman Agama, 1983/1984
Buku Referensi
Sears, Barry, author
Regan Books, 2000
Buku Teks