Adelaar, K. A. (1992),Proto-Malayic: The reconstruction of its phonology and parts of its lexicon and morphology[1], Canberra: The Australian National University
Blust, Robert; Trussel, Stephen; et al. (2023) “*isa”, in the CLDF dataset fromThe Austronesian Comparative Dictionary (2010–),→DOI
“asa”, inCharlton T. Lewis and Charles Short (1879),A Latin Dictionary, Oxford: Clarendon Press
"asa", in Charles du Fresne du Cange’sGlossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
Before feminine nouns beginning with stressed/ˈa/ likeasa, the singular definite article takes the form ofel (otherwise reserved for masculine nouns) instead of the usualla:el asa. This includes the contracted formsal anddel (instead ofa la andde la, respectively):al asa,del asa.
This also applies to the indefinite article, which takes the form ofun, which is otherwise used with masculine nouns (although the standard feminine formuna also occurs):un asa oruna asa. The same is true with determinersalgún/alguna andningún/ninguna, as well as for numerals ending with 1 (e.g.,veintiún/veintiuna).
However, if another word intervenes between the article and the noun, the usual feminine singular articles and determiners (la,una etc.) are used:la mejor asa,una buena asa.
In these cases,el andun are not masculine but feminine, deriving from Latinilla anduna, respectively, even though they are identical in form to the corresponding masculine singular articles. Thus, they areallomorphs of the feminine singular articlesla anduna.
The use of these allomorphs does not change the gender agreement of the adjectives modifying the feminine noun:el asa única,un(a) asa buena.
In the plural, the usual feminine plural articles and determiners (las,unas, etc.) are always used.
Potet, Jean-Paul G. (2016),Tagalog Borrowings and Cognates, Lulu Press,→ISBN,page51
Trinidad Hermenegildo Pardo de Tavera (1887),El sanscrito en la lengua tagalog[2] (in Spanish), Paris: Imprimerie de la Faculté de Médecine, A. Davy, page17