Analysis of information sources in references of the Wikipedia article "Perumian Kunrei-shiki" in Malay language version.
The zi ending of roomazi comes from the Kunreeshiki system promulgated in the 1930s through a cabinet order, or kunree.
As reported at the Second Conference, the writing of geographical names in Roman letters in Japan comes in two types — Kunrei Siki (system adopted under a Cabinet ordinance) and Syûsei Hebon Siki (Modified Hepburn System). Kunrei Siki is used for topographical maps, whereas Syûsei Hebon Siki is in use for aeronautical charts and geological maps.
The major disadvantage of this system (Kunrei-shiki) is that there is a tendency for nonnative speakers of Japanese to pronounce certain forms incorrectly.
The major advantage of kunrei-shiki is that inflectional endings are seen to be more regular.
