Dinh-hoa Nguyen (1995) “<span class="searchmatch">R</span>:<span class="searchmatch">vi</span>:<span class="searchmatch">NTC</span>”, in <span class="searchmatch">NTC's</span> Vietnamese–English Dictionary, →ISBN...
Ng' ng', Ng'w ng'w, Nj nj, Nk nk, Nt nt, <span class="searchmatch">Ntc</span> <span class="searchmatch">ntc</span>, Nts nts, Ny ny, Nz nz, O o, P p, Ph ph, Q q, Qh qh, Qq qq, Nq nq, <span class="searchmatch">R</span> <span class="searchmatch">r</span>, S s, Sh sh, Sl sl, T t, Th th, Tc tc...