== Codice sorgente GABC ==
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codicename:Puer natus est;office-part:Introitus;mode:7;book:Graduale Romanum, 1974, p. 47;transcriber:Andrew Hinkley-Stefano Ferri;%%(c3) PU(ei)ER(i.) *() na(iji)tus(h) est(hhh) no(ih/ji)bis,(i.) (;) et(ei~) fí(iji)li(hg)us(f) da(hhi)tus(h) est(h) no(hihh)bis:(efe.) (:) cu(e)jus(f) im(h)pé(gi!jk)ri(ih)um(h.) (,) su(h)per(h) hú(ih/ji)me(h_g)rum(hhh) e(h_f/hghvG~F~)jus:(gf..) (:) et(hg) vo(h)cá(hji)bi(h)tur(hhh) no(h)men(hhh) e(highvG~F~)jus,(gf..) (;) ma(hj)gni(i) con(eh~)sí(h)li(hhh_f)i(f) An(fhf___!gwh)ge(efe___)lus.(e.) <i>Ps.</i>(::z) Can(ehg)tá(hi)te(i) Dó(i)mi(i)no(i) cán(ik)ti(j)cum(j) no(ji)vum:(ij..) *(:) qui(ig)a(hi) mi(i)ra(i)bí(i!jwk)li(i')a(h) fe(hhh)cit.(fe..) (::)
</pre>
== Bibliografia ==
* Wikipedia.org, versione italiana, https://it.wikipedia.org