"Report from Practically Nowhere" by John Sack, 1959, published by Harper, page 140: "as part of the bargain only three men – the grand master, the lieutenant grand master, and the chancellor – could be citizens there. The other S.M.O.M.ians were to be citizens of the country they lived in."
Sovereign Military Order of Malta, 2008-12-26 by rob raeside (页面存档备份,存于互联网档案馆): "by agreement with the Italian government, citizens of the S.M.O.M. are limited to three: the Grand Master, the Deputy Grand Master, and the Chancellor. These carry S.M.O.M. passports. The numerous other members of the order remain citizens of their own respective countries."
Sovereign Military Order of Malta, 2008-12-26 by rob raeside (页面存档备份,存于互联网档案馆): "by agreement with the Italian government, citizens of the S.M.O.M. are limited to three: the Grand Master, the Deputy Grand Master, and the Chancellor. These carry S.M.O.M. passports. The numerous other members of the order remain citizens of their own respective countries."