Potgieter E. J.
Albert
W.E.J Tjeenk Willink, 1914
 Buku Teks
Sikh Religion / Sikh Missionary Center
Sikh Missionary Center , 1990
 Buku Teks
Beckhard, Arthur
Albert Einstein
G.P. Putnam`s Sons, 1959
 Buku Teks
Roggeman, Willem M.
Albert Bontridder
De Nederlandsche Boekenhandel, 1976
 Buku Teks
Higgins, John Seville
One Faith and Fellowship the missionary story of the anglican communion / John Seville Higgins
The Archbishop of Canterbury, 1958
 Buku Teks